>>53559852He's technically a shitmon, but he is pretty good in gen 3. Having no weaknesses means his low defenses don't really matter that much.
Also he has pretty decent movepool with Aerial ace/Shockwave/Brick Break/Toxic/Water Pulse.
Used to use him alongside Swampert with Aerial Ace/Detect/Shadow BallClaw/Toxic which gives you perfect coverage.