1. Guillotina - Mewgenics  
A fun idea I had she would also have 3 of her phases after getting hit enough times

2. Pyrophina and Zaratana - also from Mewgenics   
could be similar to the spirit hellions where the two fight each other and we caught in the cross fire

3.Alice - Fpe   
Could have 2 phases one in her normal state and the other in her rage state

4. Scp 106 (the old man) - Scp foundation   
Would be interesting being a entity that could go through walls and maybe they could add his realm into it when someone gets caught

5.scp 3008-2 (the ikea staff) - Scp foundation   
Could be like the dream game mafia and newborns however if one is killed more spawn close to it 

6. Tsu - Mha Ruin Au   
Could be a potential ambush entity 

7. 2011X/Sonic.exe - Creepypasta   
Just a excuse since kolossos is in the game they could also use this design since kolossos looks like his TD counterpart

8. The Donnies - Weird birds   
Could be a multi killer but mostly just 5 maybe even have a stocking mechanic

9 - 11. All the beware the rain entities/ blades ocs - also from pillar chase 2  
An excuse to have a pillar chase 2 collab also could be single entities each 

12. Boiled one and doctor nowhere entities in general  
Could be good for some reps 

13. John Doe - Roblox  
They could make there own version or make him based on the old script

14. C00lkidd/007n7 - Roblox  
Another Roblox rep

15. Red - (Godzilla nes) Creepypasta   
Since the temple raptors are in why not red himself 

16. The clown - R.E.P.O.   
Since lethal company and content warning have reps why not have R.E.P.O. Reps

17. The nun - Puppet combo  
Puppet combo reps could be fire

18. Teacher trio (Miss Circle, Miss Thavel and Miss Bloomie) - Fpe   
Another Fpe rep

19.Artful - die of death   
An excuse since pursuer and harken are there could also block off passages

20. Old bird - lethal company   
Probably a more dangerous gutter tank 

That’s all I can think of let me know what y’all think anyhow ima sleep it’s 2:51 right now I need to sleep 🫩🙏🥀

So I saw some ideas for potential entries so here’s some of mines