Venusaur is the final evolution of Bulbasaur one of the original starting Pokemon. I've had to face Venusaur many times throughout my pokemon adventures. Firstly against my CPU rival since I picked Squirtle.
My brother sadly picked Venusaur, and I lost many times against him.
It's original Japanese name is フシギバナ (Fushigibana) which is a pun of a word for "strange flower" or something.