Heavy should have a snorlax.

Scout
Pachirisu: Chucklenuts misc.
Scrafty-General Punkish Behavior
Crobat-High Speed
Miltank-Mad Milk
Lopunny-He's like a little bunny
Soldier
Braviary-'Murica
Linoone: Lt. Bites misc.
Scolipede: Maggot
Gallade: It's a Roman Soldier

Pyro
All of them-Fire
Houndoom-He's probably from Hell
Demo
Electrode and Weezing: Explosions
Chatot-Parrot Misc.
Aegislash-Eyelander and Shield
Heavy
Ursaring, Beartic, and Pangoro- He's a big shaved bear that hates people
Talonflame-Red Army Robin misc.
Hitmonchan-Killing Gloves of Boxing
Swampert: Big man
Engy
All of them-metal
Klinklang: Gotta move that gear up
Medic
Chansey and Audino: Doctor
Unfezant: ARCHIMEDES!
Sniper
Noctowl: Owl misc.
Feraligatr and Krookidile: He's pretty much Crocodile Dundee
Kecleon and Kangaskhan: Australia
Drapion: Sniper ability
Spoi
Zoroark: Illusion Ability
Ditto: Transform
Seviper: He's a snake
Kingler: Spycrab
Honchcrow: Don't trust him
Gengar: Ghost