Several Pokémon can be ridden in Cobblemon by right-clicking them while they are outside their Pokéball. Each rideable Pokémon falls in at least one of three categories: Walking (ground), Flying (air), and Swimming (water).
Walking Pokémon
Aerodactyl
Arcanine
Aurorus
Avalugg
Blastoise
Bouffalant
Camerupt
Charizard
Corviknight
Dewgong
Dodrio
Dragonite
Drifloon
Espathla
Exeggutor
Fearow
Feraligatr
Flygon
Garchomp
Golurk
Luxray
Mamoswine
Magnezone
Meganium
Metagross
Mightyena
Mudsdale
Nidoking
Ninetales
Pidgeot
Rapidash
Samurott
Sawsbuck
Scolipede
Skeledirge
Stantler
Staraptor
Steelix
Stoutland
Swampert
Tauros
Tentacruel
Ursaluna
Wyrdeer
Flying Pokémon
Aerodactyl
Charizard
Corviknight
Dragonite
Drifloon
Fearow
Flygon
Pidgeot
Staraptor
Yanmega
Swimming Pokémon
Avalugg
Blastoise
Dewgong
Feraligatr
Gyarados
Lapras
Relicanth
Samurott
Sharpedo
Swampert
Tentacruel
Wailmer