The Sonic Boost (ソニックブースト Sonikku Būsuto?), also known as the Super Boost (スーパーブースト Sūpā Būsuto?) or just Boost (ブースト Būsuto?), is a move used in the Sonic the Hedgehog series. It is used by Sonic the Hedgehog and by Shadow the Hedgehog to turn into a destructive projectile and is one of Sonic's signature techniques.