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

Despite being Water (Or Mutated Chao) slime sounds

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

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

(Advance 1) Angel Island Zone.

Originally for Infinite Battle Now retooled

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

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

Basically

Valgallah's Cream's "Chao Force" Super

Command is

D,DF,F X+Y

The "Big Green Man" (Guest) teaser.

I've been a kind of not been posting a lot in here haven't I?

A tad broken but its still functional + a different set of animations for Sonic

I also currently have plans on updating this game's build to the nightly.