Absolutely. Ghost and Fairy are both very solid offensive types, and they cover quite a bit together. Mimikyu has a wonderful Ability in Disguise, allowing it to take any hit for free. It's pretty fast and has a respectable Attack as well, along with solid coverage options, making it worth your while. It also has a paltry two weaknesses, making it especially good in-game, as not many trainers use Ghost moves, and though Steel is common, Mimikyu can easily cover it with Drain Punch. It is a bit difficult to find in the first place, but that's not an issue, as you already have one.
Mimikyu @ Life Orb / Muscle Band
Ability: Disguise
- Play Rough
- Shadow Claw / Shadow Sneak
- Drain Punch
- Wood Hammer / Leech Life
Hope I helped!