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Depending on the situation he is in, Crazy Frog wears different sets of clothing. According a 2022 brand style guide by Kaktus Film, while he can wear anything and use any props, "he doesn't choose what he wears and doesn't know what meaning his clothing may have." While it might look like Crazy Frog intentionally puts on an outfit, in actuality, he's only wearing something "because someone has managed to put it on him." Furthermore, for any props he might have, he wouldn't understand how to use it. This is contradictory to the older music videos however. Crazy Frog has used a fishing pole in Popcorn, played soccer in We Are The Champions, and used a DJ's turntable in the DJ Video.

Crazy Frog is a spotted light blue anthropomorphic frog-like creature. The iris of his left eye is significantly larger than that of the right. An upper right front tooth is missing. He is short and has a pot-belly, with a belly button. He also has a visible penis and scrotum, which was erased in censored versions of each media. Without his helmet, the top of his head dips in slightly. Originally, his head did not have this dip.

Crazy Frog is a Swedish CGI-animated character and musician created by Erik Wernquist in 2003. Originally named The Annoying Thing, he was created to accompany Daniel Malmedahl's sound effect of him imitating a two-stroke engine in a short animation for TurboForce3D. After the original animation had become a viral sensation, the character was picked up and marketed by Jamba!. He was renamed to Crazy Frog, and started his music career afterward.