TEEN TOP's April Fools prank isn't much of a prank at all, because its total fanservice!

On April 1, each member changed their Twitter profile picture to an adorable baby photo of themselves.

Can you figure out who is who in the above photo without cheating and looking at the photo below with their names?

SEE ALSO: K-netizens react to Bang Si Hyuk's Kakaotalk message about "stepping on (crushing) aespa"

In other news, TEEN TOP's Niel will be releasing his repackaged album 'oNIELy' in the middle of April.