Wigglytuff has awful 140/45/50 defenses and even more awful 70/75/50. For sure he has the typing, but the stats does not help it :/ Blissey and even Clefable, others ideal candidates for a Normal/Fairy typing, can do anything that Wigglytuff can, but better.
Speaking of Normal types, GenVI is going to introduce this
An Electric-Normal type, whit DRY SKIN. Thanks to these traits he could be able to beat BOTH Kyogre and Ghostceus, two S-Rank Pokémon. Nothingh to laugh at, unless your name is Groudon, a mon which turns Dry Skin into a liability, because of the sunlight he summons. Still an interesting Pokémon, I hope that he has good stats.
Oh, and the move he's using in the picture is an Electric type Giga Drain, which also hits both opponents in a Double battle :O . Thunder is probably better in singles, thought.