I can't believe there isn't a thread on this guy. He's such a great Pokemon in LC! Alright, here we have Tentacool. I'm feeling lazy, so... http://veekun.com/dex/pokemon/tentacool There's everything you need to know about his movepool, stats, etc. Now, Tentacool is seeing some use and praise for his use on defensive/balanced teams as a Rapid Spinner/Toxic Spiker. He also has access to very useful moves like Haze, Knock Off and Boil Over. So, here's what he can dp: Cool Standard Tentacool @ Evolution Stone/Oran Berry Trait: Liquid Ooze EVs: 116 HP / 236 Def / 36 SAtk / 116 SDef OR switch SDef and Def Bold Nature (+Def, -Atk) or Calm (+SDef, -Atk) - Boil Over/Surf/Venom Shock - Toxic Spikes - Rapid Spin - Knock Off/Ice Beam/Protect This set's been around for a while, and basically does two things: Lays Toxic Spikes and Rapid Spins. It's good at what it does, and that's what matters. It can also act as a Specially-defensive pivot, which is always nice. I'm honestly not sure about the EVs, but that's what I use. Feel free to suggest anything else. Hazer Tentacool @ Evolution Stone/Oran Berry Trait: Liquid Ooze EVs: 116 HP / 236 Def / 36 SAtk / 116 SDef Bold Nature (+Def, -Atk) - Boil Over/Surf - Toxic Spikes - Haze - Knock Off/Ice Beam This is the set that I've seen the most. It lays down Toxic Spikes, and Hazes things (Unfortunately, PO does not allow Haze and Rapid Spin to be used together). It stops set-up sweepers fairly well, and can run through a team if used/supported properly. Again, suggest EV spreads. Swords Dance Tentacool @ Oran Berry Trait: Clear Body EVs: 196 Atk / 196 Spe / 116 SAtk Jolly/Hasty Nature (+Spe, -SpA OR +Spe, - Def) - Waterfall - Return - Poison Jab/ Hydro Pump - Swords Dance I'm not sure how good this set it, to be honest, but after an SD Tentacool hits 26 Atk with a Jolly nature. Puruiru might stand in your way, but it does have some sweeping potential. Hydro Pump nails specially-weak Pokemon, but your physical moves should do the job. Other Options: Tentacool has some interesting moves, like Aqua Ring and Barrier. It's also possible to run a Choice Scarf set for surprise value (Helpful for nailing Gligar).