According to ESRB, this game contains: Mild Language, Violence
Parents: there's no overt sexual content or profanity to worry about. Despite the kiddy exterior, all the women wear impossibly short skirts, and one of the male characters is a horndog like Brock from Pokemon. Fans of giant "mech" robots won't be impressed with the cutesy animal theme designs and the shallow gameplay.
Fans of giant "mech" robot games will be disappointed with Custom Robo. The designs themselves are silly, and the gameplay is serviceable at best and far from stellar.
Deaf and Hard of Hearing gamers do not have anything to worry about, as there is strangely no voice audio. All the dialogue is text-based and there are no required audio cues in the actual battles.