Suggested by Sonic Guile is a pretty tough fighter for sure. He isn’t someone that you can underestimate as his counter attacks are legendary. Still, there isn’t really much that he can do against someone like Pikachu. Pikachu can easily evade all of his attacks and has a large array of moves which is more than sufficient to deal with Guile. His Iron Tail will make Guile re-think the fight immediately. Pikachu wins.