Type: Ice
Pokemon: Froslass LV 50 with Snow Cloak ability, Destiny Bond, Blizzard, Hail, and Dark Pulse, Glaceon LV 48 with Snow Cloak ability, Wish, Protect, Frost Breath, and Take Down, and Lapras LV 52 with Shell Armor ability, Ice Beam, Sheer Cold, Surf, and Blizzard
Puzzle and Trainers: The puzzle of my gym would be having to get around all sorts of miscellaneous stuff in a skating rink, like gloves, hats, mittens, scarves, you get the idea. It would be a final gym, but here's where there's a difference between my gym and other final gyms: instead of having Ace Trainers to battle, the player would encounter Figure Skaters and Hockey Players. The Gym Leader wouldn't be based on me, instead she would be a redhead wearing a blue figure skating dress and hockey skates and a hockey helmet and a hockey stick while "dangling" a puck.