Its skin is very hard, so it is unhurt even if stepped on by sumo wrestlers. It smiles when transmitting electricity.
– Pokemon Black Pokedex
Stunfisk has a unique type combination, Ground/Electric, which is quite interesting. It looks really strange, looking like a flattened fish. It usually has a dopey expression, like it’s stunned. But its animated sprite has it smiling every once in a while, and that smile is really creepy looking. I included the smiling version in case you want to see that smile on your desktop, haha.
Stat-wise, it’s slow, the slowest Electric type. And has more Defensive stats than Attacking ones, the highest stat being in HP.