Pokémon: Magikarp Jump: The player's Magikarp may evolve into Gyarados as part of the "Adios, Gyarados!" and "Macho Karp" events (and thereby force it to retire). In The Legend of Thunder!, Marina's fantasy featuring Lance had a standard-colored Gyarados in addition to the Shiny one. Routes 7, 8, 9, 13, 14, and 15, Melemele Sea, Seaward Cave, Kala'e Bay, Paniola Town, Akala Outskirts, Brooklet Hill, Malie Garden, Seafolk Village, Poni Wilds, Poni Breaker Coast, Poni Meadow, Poni Gauntlet, Vast Poni Canyon, Secluded Shore ( SOS Battle, fishing) Due the stress Mega Evolution puts on a Gyarados's body, it becomes even more ferocious than before. All other brain functions cease when Mega Evolution occurs, except for the destructive drive to burn down anything into cinders. Despite its brain having a powerful destructive instinct, it will obey a Trainer it truly trusts. Mega Gyarados can launch at Mach Speed by using its orifices to release water from both sides. With this speed, it has enough power to split large ships in two. Mega Gyarados is tied with Hoopa Unbound as the tallest Dark-type.

Italic indicates a move that gets STAB only when used by an evolution or an alternate form of Gyarados Routes 203, 204, 205, 208, 209, 210, 212, 213, 214, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, and 230, Twinleaf Town, Eterna City, Canalave City, Celestic Town, Pastoria City, Great Marsh, Sunyshore City, Lake Verity, Lake Acuity, Lake Valor, Ravaged Path, Valley Windworks, Mt. Coronet, Iron Island, Sendoff Spring, Pokémon League, Victory Road, Fuego Ironworks, Oreburgh Gate ( Super Rod)Once Gyarados appears, its rage never settles until the Pokémon has razed the fields and mountains around it. Moves marked with a double dagger (‡) can only be bred from a Pokémon who learned the move in an earlier generation. In BWS01, Cilan accidentally hooked a Gyarados while fishing for Qwilfish. He resolved to catch it, but its immense power was too much for him, and Cilan abandoned the plan.

The energy from evolution stimulated its brain cells strongly, causing it to become very ferocious.It is an extremely vicious and violent Pokémon. When humans begin to fight, it will appear and burn everything to the ground with intensely hot flames. Crasher Wake has a Gyarados, which was very briefly seen during his presentation, where he was riding on it in A Skuffle with Skorupi. Normal and Shiny Gyarados in Pokémon Adventures Main article: Gyara Main article: Lance's Gyarados Main article: Silver's Gyarados