STH-01 also called Sonic1 is a Mini created by Tails the Fox. It is part of the Sonic Mini series, being the first to be produced. It is based off of Sonic's appearance and abilities in Sonic The Hedgehog 1.
- Can't Spin Dash
- Can't synchronize with other Minis
- Speed limit
- Should it be pushed past it's speed limit it powers down without stopping, resulting in further damage from collisions