if this collection is about Comic book / comic strips / webcomics characters who don't belong neither to Marvel nor DC Comics there's probably a high chances a mugen version of webtoons characters or even David lizewski aka kick ass.
I found these exes chars made by ignitiongrimmy
sonic.exe
https://www.dropbox.com/s/l76tvns4hrathql/Sonic.exe_AwesomeBlue.zip?dl=0
undenic.exe
https://drive.google.com/file/d/1mLcv9FAcrBSmoBpKTNNlRpCOSyyUoFKO/view?usp=sharing
sanula digger.exe
https://mega.nz/file/YdUkFSIA#pVizr2K7cmRsEy_PwlqHmdYvg3i-c9SW4TpXCJ4f3DA
Roll.exe
https://mega.nz/file/4cUDXSKC#juYjTbdyAeFfeU-RAullp0pfvc6wcYB1LVCt1L_-lG8
Jenny.exe
https://mega.nz/file/lIclAC5J#RtpqUiIjiIvFHLD2YCa0Kx_sEyIFKxMJtlmoYvI8cLQ
yumi.exe and ami.exe
https://mega.nz/file/9Ys0wIzZ#zWhCGCLkDTq6XeSOj1QWaNhAC7XZxpBTuez5RxRm8F4
https://mega.nz/file/cZkjHSIK#FrBZ5zaePxG2MlcrksiIs8PRTMVWTm8YHFxaZ70kiM4
godzilla.exe
https://mega.nz/file/VN1Ekb4I#zF6dPLjLsAdykbMGRIlpngw4kt4sVFDp49M-XCNrDgw
Hi my name is johnnykahn, and my expercience with mugen is verry "quite" good wich i made my own mugen called Mugen multiverse Battle,it's nice to meet you all.