A Clubosaur is a triceratops-like enemy that Wario encountered in Wario World. As its name implies, it wields a large club. At any time, the Clubosaur may charge up and go on a small rampage, swinging its club frantically. The Clubosaur is invincible in this state, but the attack doesn't last very long. The club also blocks all frontal attacks, so Wario needs to sneak up on a Clubosaur from behind in order to attack it.
After three punches, the Clubosaur loses the club and reverts to standing on all fours. Now the Clubosaur can charge at Wario, a powerful attack that leaves the treasure hunter dazed for a few seconds.
Other varieties of Clubosaurs include Skelosaurs, Gatorbabies, Snow Beasts, Grizzlies, Masked Clubbers, and Club Mummies. Aside from a few costume changes and choice of club (the Snow Beast uses an icicle, for example) , these enemies behave in exactly the same way as Clubosaurs, though they do get progressively more aggressive.