a version of Mario made by BRD-Senpai based on Super Mario All Stars (moreso especially SMAS' SMB3 port).
has some accuracies to SMB3 and/or it's SMAS counterpart, but also has the following:

• the ability to shoot fireballs (and goldballs in the 12p... holy cow, NSMB2 reference?)
• the ability to spin jump (like in SMW, ig?)
• a swimming mechanic (just incase he fights a character that puts the stage to be underwater or smth)
• ...and a lot more things, haven't tried it nor read the AK1 page yet

(also yes this was found in AK1 sadly. luckily i decided to archive it here)