Pokemon's First Appearance: Pokemon Red, Blue & Yellow

Yes, Kanghaskhan is better than Venusaur. Yes, we sense your anger and confusion but let us explain. Kanghaskhan can learn Fire and Ice attacks, both of which are weaknesses of Venusaur's. In other words, Venusaur would be a rotting plant by the time Kanghaskhan is done with it. Sure, Kanghaskhan's base stat total is lower than Venusaur's (and others on this list), and Kanghaskhan's power, speed and stamina isn't that great, too. But it's only weak against Fighting attacks, which Venusaur can't learn.