level 30 Gyarados against a level 10 Pachirisu, Pokemon Diamond on deviantART
Every Pokemon trainer knows that one touch of electricity and that Gyarados is going down. Because Gyarados is water/flying type, it has quadruple weakness to electric, so its high base stats mean nothing against a tiny spark. Also, while it gets some strong dragon moves, it's not dragon type, so it's not that strong really. At least it looks cool!