In Taming of the Shroomish, Ash and his friends saved a group of Shroomish from having the abandoned mansion they called home from being destroyed, with the help of Alex, the grandson of the mansion's owner.
In Cheer Pressure, a Shroomish was part of Sheridan's cheering squad along with a Roselia, Vileplume, and Makuhita. He later assigned it to heal James's Cacnea and Jessie's Seviper with Helping Hand.
In A Shroomish Skirmish, multiple Shroomish evolved into Breloom after Team Rocket angered them.
In Pokémon Mystery Dungeon: Team Go-Getters Out of the Gate!, Team Go-Getters tried to sneak past multiple Shroomish while they were sleeping, but Squirtle bumped into one and thus awoke all of them. As a result, the Shroomish used Poison Powder on them and pursued them before being scared away by Charmander's Ember and Flamethrower.
In Promoting Healthy Tangrowth!, a Shroomish assisted Tangrowth and other Pokémon during several attempts to restore a damaged 1,000-year-old tree back to health.
Four Shroomish debuted in Johto Photo Finish, where they were seen in Harrison's explanation of the Hoenn region.
Multiple Shroomish appeared in A Bite to Remember.
A Shroomish appeared in A Corphish Out of Water.
A Shroomish appeared in A Meditite Fight.
A Coordinator's Shroomish appeared in Now That's Flower Power!.
A Shroomish appeared in the opening sequence of Jirachi: Wish Maker.
In Win, Lose or Drew!, a Coordinator's Shroomish competed in the Slateport Contest.
A Shroomish appeared in Take the Lombre Home.
In A Double Dilemma, a Shroomish was living at North Petalburg.
A Shroomish appeared in Hokey Poké Balls!.
A Shroomish appeared in A Fan with a Plan.
A Coordinator's Shroomish appeared in Cruisin' for a Losin'.
Multiple Shroomish appeared in Destiny Deoxys.
A Shroomish appeared in PK13.
In Lights, Camerupt, Action!, a Shroomish was an actor in one of Elijah's movies.
A Shroomish appeared in Clamperl of Wisdom, under the ownership of Madeleine.
A Coordinator's Shroomish appeared in Mean With Envy.
In The Ribbon Cup Caper, two Shroomish were at the S.S. St. Flower's Pokémon Center.
In Saved by the Beldum, a Trainer's Shroomish was at the Ever Grande Conference.
A Shroomish appeared in a fantasy in The Right Place and the Right Mime.
A Shroomish appeared in Weekend Warrior.
A Trainer's Shroomish appeared in Curbing the Crimson Tide!.
A Shroomish appeared in Pokémon Ranger - Deoxys' Crisis! (Part 2).
In Pokémon Ranger and the Temple of the Sea, a Shroomish helped Pokémon Ranger Jack Walker when he was a young boy lost in a blizzard.
In Some Enchanted Sweetening!, a Shroomish was lured in by the Honey that Cheryl had slathered onto a tree. Multiple other Shroomish were featured in a boss fantasy that was cut from the dub due to it containing suggestive material.
Three Shroomish appeared in An Angry Combeenation!.
In Playing the Performance Encore!, a Coordinator's Shroomish and Slakoth competed in the Battle Stage of the Daybreak Contest.
In Keeping In Top Forme!, Pikachu and Piplup scared a Shroomish, which subsequently released a Poison Powder.
Multiple Shroomish appeared in Giratina and the Sky Warrior.
In Coming Full-Festival Circle!, a Shroomish listened to Nando play his music.
In Zoroark: Master of Illusions, multiple Shroomish were living in Crown City. A few of them worked together with the other Pokémon in surrounding Zorua in the park with the intention of attacking him in retribution for what Zoroark did to the city. Before a fight could break out, the Shroomish, along with the other Pokémon, were calmed down by Celebi.
A Shroomish appeared in Mewtwo — Prologue to Awakening.
In Genesect and the Legend Awakened, multiple Shroomish were living in Pokémon Hills.
A Trainer's Shroomish appeared in Goodbye, Friend!.
In A Little Rocket R & R!, a Trainer's Shroomish was seen at a market before being captured by the Matori Matrix. It was later freed by Ash and his friends.
A Trainer's Shroomish appeared in JN096.
A Trainer's Shroomish appeared in JN103.
||Shroomish, the Mushroom Pokémon. Shroomish is mild-tempered and inhabits piles of rotting leaves inside of forests.
Pokémon Omega Ruby and Alpha Sapphire Animated Trailer
In the Pokémon Omega Ruby and Pokémon Alpha Sapphire Animated Trailer, a Shroomish surrounded May and her Torchic, only for Torchic to scare it away with a Fire-type attack.
In The Cavern, a wild Shroomish fled from a storm that a Primal Kyogre was creating.