Ribbit is a Buddy-Roid, a robot created by Captain Shields for the sole purpose of monitoring a person's vitals and keeping them healthy and happy by being their friend. Ribbit is Tanner's Buddy-Roid. Like the other Buddy-Roids, she has a specialty that is unique to her; namely, she can tap into the Hippo Zord's internal systems, which allows her to man its weapon's systems for Tanner and sometimes even pilot the vehicle on her own if need be. She can be somewhat sarcastic at times, but she means well. She immediately took a liking to Tanner upon their first meeting, saying that he had "spunk" and giving him the affectionate petname of "kid".