Deep Cheep

Deep Cheep appeared in 2006 video game called New Super Mario Bros.. Deep Cheeps (originally parsed Deep-Cheeps) are a special variety of Cheep Cheeps that are first found in New Super Mario Bros. They appear to be regular Cheep Cheeps, except for the fact that these creatures are green and will swim in the direction of Mario or Luigi in underwater levels depending on the direction they swim in. Deep Cheeps will only give up pursuing Mario or Luigi provided the latter ones swim behind and past the fish foes.