Reo Oh

Reo Oh (오래오) is the second eldest of the Oh siblings and the fourth of them to become a Biklonaut, thus being the last of them to do so in season 1. He is partnered with FX and controls the Sabertooth Clone, previously having controlled the Leo Clone.

Despite still being in high school (and despite being very popular with the girls), Reo has found it difficult to maintain his education as he works on much of the housework in the parent-less household, including cleaning and cooking. He is often concerned about the well-being of his siblings, especially his overworked older brother Teo. Reo has a lot of patience, but if he gets mad, enemies are going to drop (or his siblings are going to hear a mouthful).

Arsenal
Reo's Beginner suit and Action Bike are based on the Leo clone, giving both a yellowish-goldish hue. The Action Bike's Cycling launches five energy wheels, which can be fired all at once or in rapid succession (the latter being referred to as the "Cycling Array").  Reo's Intermediate suit and Action Bike are based on the Sabertooth clone. Beyond the changes of the Beginner and Intermediate suits, the yellow-gold colors are still maintained on the suit, though the Action Bike is now a mix of red and yellow. The Cycling skill is still the same, and Reo now has access to the Chaos Scope.
 * Beginner (Leo)
 * Intermediate (Sabertooth)

Reo's suit now reads his left ear's hearing impairment and amplifies the sounds around it so that he can hear properly. 

Toys

 * Biklonz Action Bike Reo/바이클론즈 액션바이크 래오 (2014)