Agumon

Agumon is the main Digimon protagonist in Digimon Adventure, Digimon Adventure tri., and Last Evolution Kizuna and supporting in Digimon Adventure 02.

He is the partner of Tai Kamiya, and the series mascot.

Appearance
He resembles a small yellow T-Rex-like reptile with claws.

He have green eyes.

Personality
In many ways, Agumon is a very simple soul, being largely preoccupied with getting in another meal. However, despite his black hole of a stomach, he is surprisingly astute in his observation of the world around him. He is not a violent creature, even though he acknowledges that he has had to fight all his life. He finds meaning in life by protecting his friends, ensuring that they have a chance to live out their own dreams. He is actually quite philosophical, as seen with his interactions with BlackWarGreymon.

Much like his partner, Tai, Agumon is a very courageous individual, capable of immense willpower and courage, often diving headfirst into danger, while still balancing out his partner's more impulsive tendencies early on in their relationship.

Digimon Adventure
In And So it Begins...,

Koromon Digivolved into Agumon to protect Tai Kamiya from a Kuwagamon.

In The Birth of Greymon,

Agumon fought against Shellmon due to being the only of the Digidestined's Digimon that had eaten and had enough energy to attack but he was eventually defeated, then he digivolved into Greymon to defeat Shellmon and save Tai.

In Garurumon,

Agumon attempted to digivolve into Greymon to fight Seadramon but was unable to.

In Biyomon Gets Firepower,

In Kabuterimon's Electro Shocker,

In Togemon in Toy Town,

Agumon, alongside the others Digidestined's Digimon, except from Palmon was captured by Monzaemon.

In Ikkakumon's Harpoon Torpedo,

In Evil Shows His Face,

In Subzero Ice Punch!,

In DigiBaby Boom,

In The Legend of the DigiDestined,

In Departure for a New Continent,

In The Dark Network of Etemon,

In The Arrival of SkullGreymon,

In The Crest of Sincerity,

In The Piximon Cometh,

In The Prisoner of the Pyramid,

In The Earthquake of MetalGreymon,

In Home Away From Home,

In Forget About It!,

In WereGarurumon's Diner

In Princess Karaoke,

In Sora's Crest of Love,

In The Gateway To Home,

In It's All In The Cards,

In Gatomon Comes Calling,

In The Eighth Child Revealed,

In Flower Power,

In City Under Siege,

In Wizardmon's Gift,

In Prophecy,

In The Battle for Earth,

In Enter The Dark Masters,

In Sea-Sick and Tired,

In Under Pressure,

In Playing Games,

In Trash Day,

In The Ultimate Clash,

In Etemon's Comeback Tour,

In Ogremon's Honor,

In My Sister's Keeper,

In The Crest of Light,

In Joe's Battle,

After meeting LadyDevimon, Koromon Digivolves into Agumon to fight her but she easily defeats him with a scratch.

In Now Apocalymon,

In The Fate of Two Worlds,

Digimon Adventure 02
In Enter Flamedramon,

In Iron Vegiemon,

In The Emperor's New Home,

In The Captive Digimon,

In Storm Of Friendship,

In Run Yolei Run,

In The Darkness Before Dawn,

In  Fusion Confusion ,

In If I Only Had A Heart,

In A Very Digi-Christmas,

In Dramon Power,

In Digimon World Tour, Part 1,

In Digimon World Tour, Part 2,

In Digimon World Tour, Part 3,

In Invasion of the Daemon Corps,

In Duel of the WarGreymon,

In BlackWarGreymon's Destiny,

In Oikawa's Shame,

In A Million Points of Light,

Trivia

 * He is first Digimon to have Dark Digivolve.
 * He is first and only one of DigiDestined's Partner to wear Dark Ring and Dark Spirals.