Wimp Robos are a recurring gag in the Custom Robo series. In some fighting games, there are characters known as "joke characters" that are purposefully created to be the worst character of the game. In Custom Robo, Wimp Robos are the equivalent to Joke Characters. They have the lowest base stat total in the games that they appear in. In Custom Robo GX and Custom Robo Arena, there exist challenges that involve using the wimp robo of the game.
Wimp Robos started appearing in Custom Robo V2's Grand Battle segment and have since been a staple to the series. There are 3 Wimp Robos throughout the series. They are the following: