Power Brain
Manufacturer Yomega
Release date 2001
Shape Convex/Standard
Color Various
Weight 59 grams
Dimensions Diameter: 60.1mm
Width: 36.35mm
Material Plastic
Bearing size Plastic transaxle sleeve with o-ring
Response system Auto-return clutch, complimented by starbursts

The Power Brain by Yomega is an auto-return yo-yo first released in 2001. It is the third generation of the Brain, featuring a new four-point floating clutch system for improved performance along with that distinctive auto-return. As with the original Brain and the X-Brain, it is a good yo-yo for beginning players who are learning the ropes.

It was also licensed to Bandai for the 2003-2004 iteration of the Hyper Yo-Yo line in the form of the Mega Brain (Japanese: メガブレイン).

Later on, it was re-released as the Power Brain XP, coming with the Smart Switch system built in.