SPOILER! When Super Star Mario and Super Sonic can't handle Monstro-Giga Bowser and Eggman's Omega Egg Robot, our heroes charge the Chaos Emeralds and Crystal Stars into the Super Emeralds and the Diamond Stars granting them their strongest forms yet, their Hyper Forms.
Hyper Mario sprite by jmkrebs30.
Hyper Sonic sprite by sonicfanchar. Edits by jmkrebs30.