A Watchog debuted in A Night in the Nacrene City Museum!, under the ownership of Lenora. This also marked the species' debut. It first used its Illuminate Ability to reveal Yamask's presence. It then battled Ash in a Gym battle in The Battle According to Lenora!, where it defeated his Oshawott with Thunderbolt. It appeared again in Rematch at the Nacrene Gym!, where it was defeated by Oshawott's Aqua Jet.
In Emolga and the New Volt Switch!, three Watchog lived in an apple tree, and attacked Emolga, Axew, and Oshawott when they tried to retrieve some apples for Emolga. However, they enraged a Simisear in the process, and were scared away by its Flamethrower.
In Cilan Versus Trip, Ash Versus Georgia!, Jimmy Ray's male Watchog lost to Iris's Emolga during the first round of the Club Battle after he was hit by Attract and then Hidden Power.
In Evolution by Fire!, Kylan's Watchog battled Shamus in a Double Battle along with a Mienshao, but both were defeated.
In Curtain Up, Unova League!, Mikael's Watchog battled Bianca's Emboar during the qualifying round of the Vertress Conference. It lost in the next episode.
In The Pokémon Harbor Patrol!, a Watchog was a member of a rescue team managed by a harbor patrolman named Halsey. While originally used only for crowd control and as a lookout, Watchog, with the help of N, proved itself to be a capable and valuable asset to its team.
In Cilan and the Case of the Purrloin Witness!, Mrs. Ripple used a Watchog as a guard to watch over her jewels.
In Iris and Excadrill Against the Dragon Buster!, Iris's flashback featured a Trainer's Watchog.
Two Trainers' Watchog appeared in Cilan Takes Flight!.
Multiple Watchog appeared in Climbing the Tower of Success!, with one under the ownership of a Trainer and the rest being wild.
In Rocking the Virbank Gym! Part 1, a Trainer's Watchog was revealed to have lost to Roxie in a Gym battle.
In Kyurem VS. The Sword of Justice, the Swords of Justice legend featured multiple Watchog.
A Trainer's Watchog appeared in Jostling for the Junior Cup!.
A Trainer's Watchog appeared in Strong Strategy Steals the Show!.
A Trainer's Watchog appeared in Cameron's Secret Weapon!.
A Watchog appeared in Meowth, Colress and Team Rivalry!.
In Genesect and the Legend Awakened, a Watchog owned by some Workers in New Tork City was keeping watch next to some roadworks.
In The Journalist from Another Region!, a Trainer's Watchog was entered into the Pokémon Sumo Tournament on Harvest Island. It was eventually defeated by Ash's Pignite.
A Watchog appeared in Kalos, Where Dreams and Adventures Begin!.
A Watchog appeared in Grooming Furfrou!.
A Watchog appeared in The Bonds of Evolution!.
A Watchog appeared in a flashback or a fantasy in The Forest Champion!.
A Watchog appeared in A Fashionable Battle!.
In Party Dancecapades!, a Performer's Watchog attended Monsieur Pierre's dance party.
A Watchog appeared in a flashback in A Watershed Moment!.
A Trainer's Watchog appeared in A League of His Own!.
Multiple Watchog appeared in Volcanion and the Mechanical Marvel. One appeared during a flashback, while another was a resident of the Nebel Plateau.
A Trainer's Watchog appeared in Battling With a Clean Slate!.
A Trainer's Watchog appeared in The First Day of the Rest of Your Life!.
Three Watchog appeared in Till We Compete Again!, each under the ownership of a different Trainer.
Multiple Watchog appeared in a fantasy in A Close Call... Practically!.
||Watchog, the Lookout Pokémon, and the evolved form of Patrat. Watchog's body contains luminescent compounds, which allow its eyes and stripes to glow.
||Watchog, the Lookout Pokémon. The markings on Watchog's body can glow to intimidate its foes. It has excellent vision, even in darkness.
A Watchog briefly appeared in GOTCHA!, under the ownership of Lenora.
A Watchog briefly appeared in The Plan, under the ownership of a Trainer who was listening to Ghetsis's speech in Accumula Town.