2/3 of them are references to

Sonic's Concept and is also a Skin in Sonic Superstars Cream's Debut (Though inconsistent looks)

A former 90s rival's (A red capped plumber guy) recent 3D platformer since 2017

Basically

Valgallah's Cream's "Chao Force" Super

Command is

D,DF,F X+Y

Act Music as Rounds? (may not apply to every stage)

Sumin didnt just make some characters But also sandbag (Though bare bones)

(coming some time soon or something.) The 1st Sonic Battle Redux arcade Run: Sonic.

(Not finalized yet but its a resemblance.) I have decided to make it 3 Buttoned. Though the Basic attacks mapped A,B and C buttons will also be mapped to X,Y and Z

Despite being Water (Or Mutated Chao) slime sounds

I'm taking you down like its 1998/1999!

The "Big Green Man" (Guest) teaser.

So far. The Super Transformation is far from completion. (Super Sonic Sprites by "TheKnucklesMainG4")