Disappeared Without a Trace/Incognito (Spoilers Extended)

Bored at work and I just wanted to make a list of characters who either:

1)Disappeared without a trace (Example: Bloodraven disappears and reappears as the Last Greenseer)

or

2)Who appear to be much more than they are (Example Young Griff)

Along with these individuals, please post where they are now/who they actually are and any evidence/links to theories you may have.

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Disappeared without a trace:

1)Richard Lonmouth (one of Rhaegar's squires, Lem Lemoncloak seems to make the most sense)

2)Maegor Targaryen (son of Aerion Brightflame, very small chance he is the Tattered Prince)

3)Ashara Dayne (probably dead, but according to GRRM, her body was never found)

4)Shiera Seastar (could be an ancestor of Melisandre, they are 2/3 characters (along with Jeyne Westerling) in the series mentioned to have "heart-shaped faces", she is also the only "Great Bastard" not to have an effect on the series so far)

5)Tyrek Lannister (Disappears during the riot in King's Landing, could be the Westerosi Arya sees in the HOBW)

6)Jenny of Oldstones (could have died with her husband at Summerhall)

7)Tysha (wherever whores go)

8)Gerion Lannister (Disappeared while traveling to Valyria to try and recover the lost Lannister sword, Brightroar, I have seen it theorized he could be the current Shrouded Lord)

9)Maester Walys Flowers (Maester at Winterfell, disappears at end of Robert's Rebellion, theorized to be Haldon Halfmaester)

10)Nettles & Sheepstealer (disappeared at the end of the Dance of the Dragons, most likely reappeared in the Vale as a Fire Witch and dragon that were worshipped by the Burned Men)

11)Stonesnake (disappeared in the Skirling Pass, he climbed a mountain and wasn't caught by the Wildlings like the other rangers)

12)Weasel (disappears in the Riverlands after Arya, Gendry & Hot Pie are taken by the Mountain's Men)

13)Brandon the Shipwright (attempted to sail across the Sunset Sea and was never seen again)

14)The Cannibal (disappeared at the end of the Dance of the Dragons, although he was already quite old at the time)

15Rohanne Webber (After marry Ser Eustace at the end of The Sword Sword, she ends up marrying into House Lannister before disappearing)

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Appears to be more than they are:

1)The Dusky Woman (most likely an agent of Euron of some kind)

2)Septa Lemore (Stretch marks indicate she hasn't been a septa her entire life, unless Oberyn seduced her (Tyene, but the hair color doesn't really match)

3)The Hooded Man (Lots of great theories: Theon Durden, Hallis Mollen, etc.)

4)The Sailor's Wife (I've read theories about her being Tysha or even Gerion Lannister's wife)

5)The Tattered Prince (Born in Pentos in the 230's AC)

6)Alleras aka The Sphinx (I think just about everyone thinks this is clearly Sarella Sand at "her game")

7)The Gravedigger (Again, everyone pretty much agrees this is Sandor Clegane)

8)Ser Robert Strong (Gregor Clegane)

9)Quaithe (She is most likely using a glass candle, but why does she care about helping Daenerys)

10)Coldhands (The killed him "Long ago", and its not Benjen, my guess is one of the Raven's Teeth)

11)Maynard Plumm (All but confirmed that this is Bloodraven using a glamour)

12)Benjen Stark (Disappeared while ranging beyond the wall)

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It also should be noted we are never given explicit evidence for the deaths of the Targaryen's (I've already mentioned Bloodraven/Shiera/Baby Maegor:

1)Vaella (simple minded daughter of Prince Daeron/Kiera of Tyrosh

2)Rhae + her children (Egg's sister)

3)Daella + her children (Egg's other sister)

4)Daenora (Rhaegel's daughter/Aerion's wife/Maegor's mother)

5)Mya & Gwenys Rivers (Bloodraven's sisters)

6)Daena the Defiant (Mother of the Blackfyre line)

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Please let me know what you think about any of these "mysterious" characters, as well as any I missed. I swear I better not see anything about Euron=Daario=Benjen. Feel free to discuss other mysterious characters such as The Harpy (The Green Grace of Mereen imo) and The Perfumed Seneschal, that don't really fit into these categories.

ETA: Thanks to u/myjupitermoon, u/Kailung, u/LukeSkywalkerIsDead, u/canitryto, u/Link_Snow, u/Bennings463, u/TyrionHill, u/Andlazytoo and u/Valuesauce for the help!