Sonic the Hedgehog is a veteran fighter in the upcoming Super Smash Bros. Ultimate. He was confirmed to return on June 12, 2018, during Nintendo Live at E3 2018. His design is based on his recent 3d appearances.
Changes from SSBWU/3DS
Sonic now takes damage when swimming in water.
Sonic's dash attack has changed from a rolling kick into a simple kick.
Grabs and Throws
Spin Dash cannot be cancelled into shield anymore.
Homing Attack now shows a reticle around the opponent it is targeting.
Sonic's Final Smash, Super Sonic, is no longer controllable; instead, Sonic rapidly flies diagonally across the screen, ascending and descending his flight trajectory.