Specials:

Roll Dash:
D, DF, F, x

Spin Dash:
Hold B, F, x

Genocide Cutter:
F, DF, F, a/b/c (Ex Version Hits 4 Times)

Ring Toss:
HCF, a/b/c (Ex Version Knocks The Opponent Back)

Combo Attack:
D, DF, F, y

Jump Drive:
D, DB, B, z

Dive Kick: (Air Only)
Hold D, x

Counter Attack:
HCB, x

Assists:

Tails Assist:
D, DB, B, a

Knuckles Assist:
D, DB, B, b

Shadow Assist:
D, DB, B, c

Supers/Hypers:

Super Combo:
D, DF, F, D, DF, F, x+y

Super Jump Drive:
D, DB, B, D, DB, B, x+y

Super Roll Dash:
D, DF, F, D, DF, F, a+b

Ring Toss Barrage:
D, DF, F, D, DF, F, y+z

Super Sonic:
D, DB, B, D, DB, B, a+b

Miscellaneous:

Roll Forward:
Hold F, y+z

Roll Backwards:
Hold B, y+z

Dodge:
y+z