Wario is Mario's evil counterpart in the Nintendo Mario games.
He first appeared in Super Mario Land 2 as the antagonist who stole Mario's castle. Then Wario started appearing in his own series of games which include:
- Wario Land: Super Mario Land 3 (Game Boy)
- Wario Land 2 (Game Boy)
- Wario Land 3 (Game Boy)
- Wario Land 4 (Game Boy Advance)
- Wario Ware Inc, Mega Microgame$ (Gameboy Advance)
- Wario World (GameCube)
- Mario Golf
- Mario Tennis
- The Mario Party series
- The Mario Kart series
The antagonist in Wrecking Crew (which was released before Super Mario Land 2),"Mr. Spike" is belived to have been Wario, so Wario's last name is probably Spike.
Wario is very greedy and is well known for it.