Dr. Kawashima

Dr. Ryuta Kawashima (Japanese: 川島 隆太) is a Japanese neuroscientist and host of the Brain Age franchise. In the Brain Age games, Kawashima is represented by a polygonal version of his own face, similar to Andross.

Dr. Kawashima appears as an Assist Trophy in Super Smash Bros. for Nintendo 3DS / Wii U and Super Smash Bros. Ultimate, using his Brain Age appearance. When summoned, he immediately disappears, but causes numbers to fly across the screen. If two numbers collide, they add into a larger number, and if the two numbers equal ten or greater then they explode. The explosion is bigger and lasts longer if the numbers equal exactly ten. Players can also attack the numbers to knock them away.

Dr. Kawashima has a trophy in Super Smash Bros. for Nintendo 3DS / Wii U and a spirit in Super Smash Bros. Ultimate. In Super Smash Bros. for Wii U, his trophy is obtained by clearing Classic without losing a single life. His spirit in Super Smash Bros. Ultimate can be enhanced to Dr. Kawashima (Concentration Training), otherwise known as Dr. Kawashima (Devilish Brain Training) in PAL and Australian releases. Dr. Kawashima's enhanced spirit depicts his devilish appearance.