Dr. R

Dr. R (Korean: 닥터 R; Dr. R) is a character in the Crazy Arcade series.

Design and characteristics
Dr. R is an older male scientist with pink hair and clothes. He wears glasses with spinning patterns and has a mustache, giving him the appearance of a mad scientist.

In KartRider
Dr. R is a playable character in KartRider. He is associated with tracks, as well as the  item.

In AirRider
In AirRider, Dr. R is a non-playable character who stands on a box at the eastern section of Boomhill Square. He comments that upon landing at the town square the previous night, his bag fell out, releasing his Lucci everywhere. The Lucci coins can be found scattered throughout Boomhill Square and can be picked up by pressing the Control key.