| This minifigure has only appeared in video game(s)|
Although this article is about an official minifigure, it never existed in physical form, or appeared in any official LEGO sets.
Radium is a Minifigure who appeared in the Video Game LEGO Stunt Rally. He was a Rock Raider, but was expelled from the program for performing radioactive tests on people. He wears a yellow radioactive suit to protect others from his glowing radiation and he drives the Rad Truck and is the City Champion.
- His vehicle is based off of set 2148 LEGO Truck.
- His helmet and visor are also used by the Aquasharks, the Aquaraiders, the Aquanauts, and the Hydronauts.
- Radium gets his name from the highly radioactive chemical element of the same name.