Lillipup is a light brown, canine Pokémon. It has oval, brown eyes, a red nose, and its face covered by an abundance of cream fur. This facial fur can be used for radar and provides Lillipup with information about its surroundings. It has large pointed ears with a tuft of fur near the base of each. Its fur puffs out above its paws, and its back has a spiky dark blue blaze. Each paw has three toes, and a blue paw pad that can be seen in Pokédex 3D Pro. It has a short, tufty tail.
It is an intelligent, courageous Pokémon capable of judging its opponent's strength. Lillipup's intelligence and obedience makes it popular for beginners due to how easy it is to raise. It is also extremely popular with Trainers living in apartments due to it never yelping. It uses its fur as a radar for checking the opponents' condition. While normally it is very brave, Lillipup is cautious to know when to flee from an opponent it cannot defeat. Due to it being smarter than the average child, Lillipup never forgets the love or abuse it receives while being raised.
Lillipup debuted in The Battle According to Lenora!, under the ownership of Lenora. It was used during Ash's Gym battle and was able to defeat Ash's Tepig. In the dub of the next episode, it was said to have evolved into a Herdier, but in the original version, Herdier is a separate Pokémon from Lillipup.
A Lillipup appeared in White—Victini and Zekrom and Black—Victini and Reshiram, under the ownership of Luis. In the latter movie, it was helping Luis search for rare herbs frozen in the ice when it nearly fell into icy water after Luis lost his grip on it during a disaster in which a giant iceberg hit the glacier they were on; it was then rescued by Damon's Gothitelle's Confusion. In the former movie, it made a brief cameo appearance while fulfilling a similar role.
Multiple Lillipup appeared in Lost at the Stamp Rally!.
A Lillipup appeared in Ash Versus the Champion!.
Multiple Lillipup appeared in A Maractus Musical!.
A Lillipup appeared in The Mighty Accelguard to the Rescue!, under the ownership of a shopper at the Driftveil Market.
A Trainer's Lillipup appeared in Climbing the Tower of Success!.
In Clash of the Connoisseurs!, Mr. Hatterly thought a Lillipup would be a good Pokémon for Marigold. However, Cilan disagreed, much to Marigold's relief.
A Lillipup appeared in Rocking the Virbank Gym! Part 1.
Multiple Lillipup appeared in All for the Love of Meloetta!.
In Kyurem VS. The Sword of Justice, the Swords of Justice legend featured multiple Lillipup.
Two Lillipup appeared in Jostling for the Junior Cup!, both under the ownership of a Trainer.
A Trainer's Lillipup appeared in Curtain Up, Unova League!.
A Trainer's Lillipup appeared in Lost at the League!.
A Lillipup appeared in Strong Strategy Steals the Show!.
A Lillipup appeared in a flashback in Team Plasma's Pokémon Power Plot!.
A Lillipup appeared in a flashback in Secrets From Out of the Fog!.
A Lillipup appeared in a fantasy in Ash and N: A Clash of Ideals!.
In The Island of Illusions!, a Lillipup was living at Grand Spectrala Islet.
A Trainer's Lillipup appeared in The Journalist from Another Region!.
A Trainer's Lillipup appeared in Confronting the Darkness!.
Two Trainers' Lillipup appeared in Alola to New Adventure!, with one appearing in a flashback.
Two Lillipup appeared in First Catch in Alola, Ketchum-Style!, both under the ownership of a Trainer.
Three Trainers' Lillipup appeared in A Shocking Grocery Run!.
A Lillipup appeared in a photo in Lillie's Egg-xhilarating Challenge!, A Glaring Rivalry!, and Night of a Thousand Poses!, under the ownership of Lusamine. In that photo, it was held by a younger Lillie before she developed a fear of Pokémon. It has since evolved into a Herdier.
A Trainer's Lillipup appeared in Crystal-Clear Sleuthing!.
A Trainer's Lillipup appeared in One Journey Ends, Another Begins....
Three Trainers' Lillipup appeared in Getting the Band Back Together!.
A Trainer's Lillipup appeared in A Glaring Rivalry!.
Two Lillipup appeared in Treasure Hunt, Akala Style!.
A Trainer's Lillipup appeared in Getting a Jump on the Competition!.
A Trainer's Lillipup appeared in Sours for the Sweet!.
A Trainer's Lillipup appeared in A Young Royal Flame Ignites!.
A Trainer's Lillipup appeared in The Shape of Love to Come!.
In Securing the Future!, three Trainers' Lillipup joined the rest of Alola in showering Necrozma with light so it could return to its true form.
A Trainer's Lillipup appeared in League Offenders and Defenders!.
A Trainer's Lillipup appeared in Exhibition Unmasked!.
In From Z to Shining Z!, a Trainer's Lillipup watched the battle between Ash's Pikachu and Tapu Koko.
A Trainer's Lillipup appeared in Thank You, Alola! The Journey Continues!.
A Trainer's Lillipup appeared in The Sinnoh Iceberg Race!.
Three Lillipup appeared in a video in Raid Battle in The Ruins!.
Three Lillipup appeared in a video in A Close Call... Practically!.
||Lillipup, the Puppy Pokémon. The long hair covering Lillipup's face is an excellent radar, which senses conditions in the surrounding area.