- For the version of this group before the Super Genesis Wave, see House of Acorn (Pre-Super Genesis Wave).
The House of Acorn is a group that appears in the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics. It is the royal family that rules over the Kingdom of Acorn in the Acorn Archipelago, from the city of Mobotropolis.
At some point, the Acorn dynasty included one Queen Nicole, whose name was later suggested by King Acorn as a name for the A.I. created by Dr. Ellidy. King Acorn ruled over the city of Mobotropolis for some years, and proved a benevolent ruler and loving father to his daughter Sally Acorn. Unfortunately, he made the mistake of trusting Dr. Eggman, Walter Naugus, and Julian Snively, who lied about a United Federation invasion. The two Humans used the resources they got in returned for their "help" to seize control from King Acorn, and banished both him and Naugus to the Special Zone. The royal family was thus removed from power for roughly a decade, until the Freedom Fighters-which included Sally and Sonic the Hedgehog-managed to drive out Eggman and rescue King Acorn. Upon being restored to the throne, King Acorn allowed Sally to continue leading the fight against Robotnik's forces around the world. Subsequently, Naugus briefly imprisoned the king in his own castle and seized control of Mobotropolis, but fled the city, allowing Sonic and Tails to free their monarch.
- Queen Nicole's status as a "long-past queen" may be a nod to the fan-theory that the version of Nicole featured in the Sonic the Hedgehog cartoon was named after Sally's unseen mother.