Smoke Choked

It's RoySquadRocks's Pac-Man with all of the Pac-Man World moves removed, due to the way RoySquadRocks does his updates.
By RoySquadRocks, edited by gabe2006

It's just Bey's Weiss with fatalities.
By Bey, edited by Wildshark
 

A Donald edit I found on GameBanana with the following changes (anything red is OP and anything green is important):
- New icon (a bit lazy lookin')
- Recolored
- Faster, his back-dash goes way higher
  + Dashing activates afterimage effect
- Burgers now multi-hit
    +Aerial burgers do not
- Fries are now sad faces cause yes
    + Fries also now move forward
- Neutral-B now stuns
- Does more damage per hit
- Changed "Go Active! (strong)" input
   + Is now |down, forward, y|
- Changed "Hamva-ga x4" input
  +Is now |down, forward b|
- Now has 10 jumps
- Changed image in background during hypers to thonk face
- Changed "Dona-Side Cutter" input
  +Is now |down, down, c|
- First palette has regen
- Has 7 hyper bars
- Most moves give hyper, including taunting
- Changed "Hamva-ga-DA!" input
  +Is now |down, forward, down, forward, z|
-Now throws out 3 bombs instead of 1
- Has 2-4 Dona-Girls (depends on the move)
- Increased Health (not more than x1.5)
- "Donald-Magic" is now way stronger. May 1-shot weaker characters.
By kishio+OfficialKWYT

Yep, that's right.  There was a Sonic X video game, and no, it's not a regular game.  It was a game for the Leapster Learning Game System, an educational game console from LeapFrog, and it used Genesis sprites rather than sprites more reminiscent of the anime's art style.
This version of Sonic is based on that game, using the Nitro Supreme template, the same template used by Evilaso Da Paz and Camren Springer.
By Sebastian
 

A pretty shoddy Judge Dredd
By Alejandro Iaccarino

A skin mod for Mid-Fight Masses, featuring
Thicc Nun Sarvente
Thicc Ruv
Thicc Demon Sarvente
and optional altered dialogue from the original
By SiniSploon
 

Should have just called her Rambo-Eyes Darkness Metal Karin.
By Brergrsart, super artwork by VisualDiscord realFraud

OH MY GOD, NEIL CICIEREGA!
This mod is only over Winter Horrorland (Week 5, Song 3)
By lol4meh
 

I have no clue what this character is, but it's another cheap boss type, this time based on Roblox.  It seems to be based on this thing from the game
By Kuro Aonix

"Sometimes I love the community" - Fuzzy Nuts
Replaces the sole palette for Ruhmleyna by Pre-To
By Tani-Oh
 

Well, well, well, what do we got here?
Beep.
We should just KILL you, but...what the hell, it's been a boring day.  Let's see what you've got!
 
Combining TANKMEN with Home Depot, this perhaps the most unique SiIvaGunner mod yet, down to every detail.
Comes with fourteen unique and exclusive game over insults, provided by JohnnyUtah himself!
By Expensive Dispenser
 
 

A cheap edit of Shingo, inspired directly by Omega Dee Bee Kaw
By JtheSaltyy FUNNY BY DRONK XD! 
Sprites by Troy99 FUNNY BY DRONK XD Have you guys played the new gacha?

Not Shane in the TFGAF style, for whatever reason
By Rylee111

You know the one!
By Zennon Pivot, A.I. patched by net

This is a modification of M.U.G.E.N. 1.1 that enables online play, and only online play.  Or at least, that's what it says on the tin.
In reality, this is an April Fool's 2019 M.U.G.E.N. build, containing only one character (Net Fu Man) and coding that crashes the game not too long after a match loads.
You can read more about it, here: https://mugen.fandom.com/wiki/N.E.T.G.E.N
By PlasmoidThunder

Quoted from the Free For All post
By Warner, aperson98, BobaFett, Tweenies_1998

An edited version of Scarlet Witch, now with MVC2 gameplay and some fixes, coinciding with the recent release of WandaVision on Disney+.
By Red Chariot, DarkWolf13-MvC2/Edited by JJkoolaid Template Used
 

A SFW joke character based on the hentai site, HentaiHaven, done in a similar fashion to e621.  Unlike e621, which is based on furries, HentaiHaven is based on weebs and anime.  You'll see plenty of reference to DBZ and Jojo, in particular, including in its 12p.
By Kuro Aonix

An example of source accuracy taken too far.  NES Silver Surfer plays exactly as he does in Arcadia Systems' Silver Surfer video game.  He can only move in four directions and fire energy spheres, which barely do much damage.  No matter what, he will always die in one hit, which can result from getting hit by an attack, colliding with the opponent's hitboxes, or even just spontaneously dying without any rhyme or reason.  There is a reason why he is in the Joke Character tier of SpriteClub.
By Ahuron

Capcom Goku, but all he does is spam Hadoukens and Kamehamehas
By DarkMemphis and EmuBoarding, blazemanxd

A pretty good 3D Steve, but not a very well known one.  More than likely released to coincide with Steve's trailer.
By Giko

The villainous, big boned boy from South Park!
By Pokemonboy7051
2nd File: A.I. patch by Lillie's MADs
Quote from Lillie's MADs
 

Quote from Pokemonboy7051:
A very creative and crazy self-insert, infamous for being a dry-humper mad lad.
By Pokemonboy7051
 

A joke version of Tem Village, based on this Tem Village remix: 
By Oliver As Latias (also known as OliverTEENAGER13)
 

70's Mega Man self insert, and the fourth released Oliver clone.  He was updated...I dunno when.
By 70 and OmarTheNerd