Playable:

@Kholey69 - Koopa

@Xvonlol - Goomba (The Goomba in AKR is comfirmed to be a female)

@DaRealFlexSentralLol - Shy Guy

@Laenai - Piranha Plant

Supporting:

@Da_Treino - Bowser

@Sel499 /@Poley64, @DaRealMemeCentralLol , @YvonXD, @Real_Saw_Yay_im_a_tool_bfb , @TheCheshireCat , @TaeYai , @NonsenseNH - Koopalings

@dogtroid - Fighter Fly

Bosses:

AKR:

@Noob_Gaming - Wario

@tooyo1234 - Peach

@ColRun1613 - Waluigi

@WisdomTheFunkyBoi - Luigi

@Red2bromer/Zaul - Mario

AKR2:

@C2Games - Popmo

@BBBGaming - Saladro

@DeafPlayer - Umbrelta

@Boris-the-wolf-bear - Burgerstein

@SS0 - Flying Spaghetti Monster

@Red2bromer/Zaul - Mario/Monstario/Final Confrotation Mario

@PALCreator - Dan Hikbi

@BonkersFace - Zangief

AKR 2 2.0:

@Braixen-official - Shroomario

@Darkness-Wolf- - The Clossosal Muertoshroom

@Emmalar - Fungumbrella

@DaylenTvGaming - The Great Sir Lord Willenby Huxley Shroomingmeyer III, Esquire, P.H.D. and Philanthropist Extraordinaire

@Adonis_Stickman - Ribbup

AKR 2 Boss Rush:

@FUNNYEXE - King Yoshi

Other:

Various GJ users - Yoshis, Toads, Babies, Thwomps and other enemies in AKR 1, 2 and 3