[Guide] Ultimate biometrics farming guide (and also character rarity / farmability ranking)

Introduction:

Based on the idea of u/ImCorvec_I_Interject in this post and this post, I developed a calculation basis to quantify how hard it is to farm for bios of a specific character. Please note that there are numerous assumptions that have to be made to come up with this ranking. You may disagree with some of the assumptions made so I'm open to any opinions to improve this table.

Spreadsheet link:

https://docs.google.com/spreadsheets/d/1cN9Esr2TEZABtZfam7xhApyVSRWDT4yTS85HCWwdK-I/edit?usp=sharing

This spreadsheet contains detailed calculations / formula to come up with the numbers as well as other details.

An extracted version summary table will be shown below.

Applicable version:

This guide is applicable to game version v1.8.0 (a.k.a. Spider-verse update).

Change log for v1.8.0 update:

New characters added: Miles, Gwen, Silk
Removed Jessica Jones from battleworld reward
Bio gains from warp missions and villain siege changed according to the addition of the 3 new characters
Bio gains from daily free 8-bio-selectors slightly adjusted according to the addition of the 3 new characters who are all unlockable at rank 1

Change log for v1.7.0 update:

Hulkbuster no longer purchasable in chaos chest. (HB is supposed to be not purchasable in the chest according to this patch note but I can still get HB from the chest lol.)
Gamora purchasable from honor token direct-buy.
Warwolf purchasable from honor token direct-buy and in honor chest.
Elsa Bloodstone purchasable from chaos token direct-buy and in chaos chest.
Lash purchasable from chaos token direct-buy and in chaos chest.
Jessica Jones as a reward in the rank-4-to-6 battleworld.
Bio gain from battleworld changed according to the change in battleworld pattern
Effect of daily free 8-bio-selectors added.
Bio gain from warp missions and villain siege changed according to the addition of Jessica Jones.
Because timeline battle entry limit resets upon weekly reset, players have an additional set of 10 attacks and 5 revenges on Friday. Therefore bio gain from honor token / chests changed according to that.

Summary: (from the easiest to farm to the rarest)

Rank	Character	Daily bios gain	Locations / sources
1	M.O.D.O.K.	36.26	Special missions, Story missions, shifter
2	Ultron	36.24	Special missions, Story missions, shifter, Chaos chest
3	Giant-Man	36.16	Special missions, Special shifter
4	Yondu	28.00	Special missions
5	Yellowjacket	27.99	Special missions
6	Groot	27.52	Special missions
6	Nebula	27.52	Special missions
8	Drax	24.64	Special missions
9	Ronan	22.45	Special missions
10	Spider-Man	20.49	Dimension rift, Story missions
10	Hawkeye	20.49	Dimension rift, Story missions
12	Captain America	20.01	Dimension rift, Story missions
12	Blade	20.01	Dimension rift, Story missions
14	Vision	19.04	Dimension rift, Story missions, Special shifter
15	Mockingbird	18.06	Story missions, shifter, Chaos chest
16	Ghost Rider	17.82	Dimension rift, Story missions
17	Iron Fist	17.65	Dimension rift, Story missions, Honor chest
18	Black Widow	16.20	Story missions, shifter
19	Iron Man	14.75	Story missions, shifter
20	Green Goblin	14.34	Story missions, shifter, Chaos chest
21	Black Panther	14.01	Dimension rift, Story missions
22	Sharon Carter	13.91	Story missions, shifter, Honor chest
22	Elektra	13.91	Story missions, shifter, Honor chest
24	Doctor Octopus	13.86	Story missions, shifter, Chaos chest
25	Sif	13.43	Story missions, shifter
25	Deathlok	13.43	Story missions, shifter
27	Bullseye	13.37	Story missions, shifter, Honor chest
27	Punisher	13.37	Story missions, shifter, Honor chest
29	Daredevil	13.26	Story missions, shifter
29	Falcon	13.26	Story missions, shifter
31	Winter Soldier	13.20	Story missions, shifter
32	Red Skull	12.89	Story missions, shifter, Chaos chest
33	Luke Cage	12.77	Story missions, shifter
33	Hulkbuster	12.77	Chaos token, shifter
35	Hulk	12.72	Chaos token, shifter
36	Elsa Bloodstone	12.49	Chaos token, chaos chest
37	Daisy Johnson	12.46	Story missions, shifter
37	Phil Coulson	12.46	Story missions, shifter
37	Lincoln Campbell	12.46	Story missions, shifter
40	Thor	11.82	Dimension rift, Story missions
41	War Machine	11.80	Story missions, shifter
42	Ant-Man	11.09	Special shifter
43	Lash	11.04	Chaos token, chaos chest
44	Venom	10.91	Story missions, shifter, Chaos chest
45	Wasp	10.77	Special shifter, Chaos chest
46	Kingpin	10.37	Story missions, shifter, Honor chest
47	Destroyer	8.82	Dimension rift
47	Loki	8.82	Dimension rift
49	Gamora	7.99	Honor token, Honor chest
50	Red Hulk	7.51	Honor token, Honor chest
50	Warwolf	7.51	Honor token, Honor chest
52	Captain Marvel	6.04	Honor token, shifter
53	Black Bolt	5.19	Story missions, shifter, Honor chest
54	She-Hulk	4.33	Battleworld
55	Black Cat	4.26	shifter
56	Spider-Gwen	3.49	(Nil)
56	Miles Morale	3.49	(Nil)
56	Silk	3.49	(Nil)
59	Sister Grimm	3.36	Battleworld
60	Star-Lord	3.17	Chaos chest
61	Jessica Jones	3.01	(Nil)
62	Rocket Raccoon	2.80	shifter
63	Malekith	2.75	shifter
64	Singularity	2.15	Battleworld
65	Angela	1.59	shifter

Notes and assumptions:

Story missions: Story missions' bio drop rate is assumed to be 50%. Maximum of 3 instances of bios drop can be occur for one story mission. Therefore on average 6 runs are needed to max out the bio output of a story mission. Data-miners' help is needed to confirm for the actual drop rate. Besides, I assume, for an instance of bios drop, there is always 1 bio dropped. The chance of dropping multiple bios in one "successful" run is so small that it was neglected in the above calculation.
Special missions: For Special mission farming, assume you always run stage 5 of Special missions for farming bios. Bio drop rate for stage 5 of special mission is 70% per this post (68.25% for single bio drop, 1.4% for double bio drop and 0.35% for triple bio drop). It is assumed to be 10 to 13 runs per each unlimited special mission run in the calculation. The number is for reference only. As the number is highly variable from person to person, you should measure your own number of runs for a more accurate number.
Dimension Rifts: Regarding Dimension Rifts, I assume two-third of your 50 friends (i.e. 33 friends) open a rift everyday. Assume you can only see one-third of them (i.e. 11 rifts per day). For a total of 11 rifts available, there is one particular character's rift available per day. Assume the time left when you see the rift is, on average, 20 minutes. Assume you always run stage 1 for farming bios. Assume on average 1 min per run (loading time included). That gives 20 runs per 1 rift opened. Bio drop rate for a stage 1 rift is 40%, per this post again. It is assumed to be 20 runs per each dimension rift run and you run, on average, one rift run per character per day. The number is for reference only. As the number is highly variable from person to person, you should measure your own numbers for a more accurate number.
Story mission shifters: Regarding dimension shifters in story missions, 14 different enemy shifters are available in story missions chapter 4 to 8. 13 different ally shifters are available in story missions chapter 1 to 8. 7 different ally shifters are available in story missions chapter 9 to 10. There are a daily limit of 10 for ally shifters and 10 for enemy shifters. For ally shifter farming, I assume you either fully farm chap 1 to 8 or fully farm chap 9 to 10. For enemy shifters, when you are doing a story mission, there won't be an enemy shifter that is the same as the main boss. Therefore for some story missions only 13 different characters may appear as enemy shifters, rather than 14. But I assume its effect on the overall bio gain is minimal and it is neglected in the above calculation.
Special mission shifters: Ant-Man and Wasp appear in special mission #10 as ally shifters. 20% appearance rate for either of them, that is 10% rate for specifically one of them. Vision, Ant-Man and Wasp appear in special mission #11 as ally shifters. 20% appearance rate for any of them, that is 6.67% rate for specifically one of them. You immediately know at the beginning of a special mission stage whether you get a shifter or not, and force-close app won't consume your daily limit of runs or energy, so it is viable to force-close app to "force" shifters to appear. In the above calculation, I assume (a) you would force-close app for shifters during the 10 limited runs, but wouldn't do that during unlimited runs, (b) you are farming for multiple shifters simultaneously and so you would accept anyone as shifter, (c) you are farming YJ's special mission, and (d) you run 13 runs during each unlimited period, for 2 periods, plus 10 limited runs, in each day.
Honor and chaos chests: Regarding honor and chaos chests, 9 different characters are available in each kind of chests. Assume 25% chance to get 2 bios in each chest, and 75% chance to get only 1. Chance of getting 3 bios is so small that it is neglected here. (Based on u/Jplato09 's findings in this post the expected bio gain in opening a chest is 1.32. But in my calculation I tuned it down to 1.25 for prudence's sake.) (Data-miners' help is needed to confirm for the actual rates.) Clearing 9 stages of Villain Siege gives a total of 1,500 chaos tokens, which gives a 9.09 chaos chests opened per day. 10 normal Timeline battles + 5 revenges give a total of 750 honor tokens, which gives a 4.55 honor chests opened per day.
Battleworld: Regarding Battleworld rank reward, I assume a Battleworld event lasts for 3 days. One of three Secret Wars A-Force characters plus Jessical Jones cycles through the Battleword event of rank 4 to 6 as rank rewards. Therefore the chance of obtaining a particular A-Force character's / Jessica's bios appears once in 12 days. Being ranked within top 10% gives 20 bios. That gives 1.67 bios per day for a particular A-Force character / Jessica. For the rank-1-to-3 one, there is currently no fixed regular pattern for the bios rewards, so I don't include bios gained from the rank-1-to-3 one. You can refer to this post for the history of the past battleworld events.
Villain Siege: I assume you can clear 9 stages of Villain Siege to collect 9 random bios everyday. The chance of dropping multiple bios in one stage clear is too small that it was neglected in the above calculation. You have an equal chance of getting bios of all characters, except She-Hulk, Singularity and Sister Grimm, as a clear reward for a stage of Villain Siege.
Warp missions: Warp device level is assumed to be level 8, which gives 12 warp missions everyday. The chance of getting a perfect clear to give multiple bios is too small that it was neglected in the above calculation. You have an equal chance of getting bios of all characters, except She-Hulk, Singularity and Sister Grimm, as a clear reward for a warp mission.
Daily 1-☆-hero-chest / 8-bio-selector: Since the v1.6.0 Howling Commando / Halloween update, you are guaranteed 8 bios per day from the free 1-☆-hero-chest / 8-bio-selector. Seeing the fact that you can only get a one-star character from the chest, you will gain, on average, (8*11/33) bios of combatants, (8*13/33) bios of speedsters, (8*7/33) bios of blasters and (8*2/33) of Universals, per day.
Alliance battle: You are guaranteed 3 bios of an Agents of S.H.I.E.L.D. character everyday if you scored high enough (near 60K points). Since the requirement is too high that only very few players can achieve that, the bio gain from daily alliance battle is omitted.
Team-up Play (formerly known as Multiplay): Bios are a guaranteed reward for a very high VIP, which only very few player can achieve that. Therefore bio gains in that case are not included in the above calculation. Bios can also be a random reward for the rest who are not a high-enough VIP (and even VIP 0), but the drop rate is too low that the bio gain in that case is also omitted here.
Other sources: Bio gain per day calculated per above did not include the gain from 1*-to-4* hero chests as a daily check-in reward once per week and the 3*-to-6* hero chests as a daily check-in reward once per 4 weeks, from where you have an equal chance of getting bios of all characters. Since the amount of bios gained from these sources are the same for all characters in probabilistic sense, they are neglected in the above calculation.
Bio Convertor: You may also gain extra bios from Bio Convertor by scrapping unwant bios, but it is usually not suggested to do so.

Anecdote / interesting observation:

Black Panther is not as rare as people thought. If you are active enough in this game and you are hard-working enough to run for BP's dimension rifts (like how you do for farming YJ and GM in special missions), BP can be very easy to farm (even easier than War Machine and Venom).
With A-Force characters cycling through Battleworld and the fact that you may gain up to 20 bios (and even more than 20, if you are lucky) in each event if you rank high enough, they are not as hard-to-farm as people thought.

OP's words:

Please comment / give your opinion / provide constructive criticism and feedback. Please notify me for any mistakes I have made.

My other threads:

Alliance Battle Schedule and daily missions schedule

Battleworld History Thread

EXP tables

List Of All Updates

Posted Oct 25, 2015, 2:12 PM UTC · edited

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