Leomon is a minor hero in Digimon Adventure and a major hero in Digimon Tamers. He resembles a humanoid lion warrior that weilds a mighty sword. He can also Digivolve to SaberLeomon (despite skipping to the Ultimate Level). His known attack is Fist Of The Beast King. He is Ogremon's rival. He is partner of Jeri Katou in Digimon Tamers.
Leomon went face-to-face with his rival, Ogremon, he was infected by Devimon's Touch of Evil, turning him evil. Luckily Tai and Matt raised their Digivices and released the Black Gears from Leomon's body, returning him to normal.
Later, he returned as SaberLeomon to rescue Mimi and Joe from MetalEtemon. He challenged MetalEtemon to a battle as SaberLeomon, but was fatally wounded by MetalEtemon's attack. As he lay dying, Leomon said that he will be reborn in Primary Village.
Leomon first appeared from a rainbow when Jeri and Calumon were attacked by Kumbhiramon and became Jeri's partner after he defeated the rat Deva. While journeying in the Digital World with the Tamers to rescue Calumon, Leomon's partner, Jeri was kidnapped by an eight-headed serpent named Orochimon, whom he defeated and rescued Jeri. In the end, during Beelzemon's attack on the Tamers, Leomon was killed by Beelzemon by strucking him through the stomach, and as Leomon lay dying, he reminded Jeri to be brave and she has a lion's heart. After that, his data was also absorbed by Beelzemon, leaving Jeri mournful, upset, and sad. Takato then went into a rage to avenge Leomon's death.
Later, during the D-Reaper battle, while attempting to rescue Jeri and Calumon, Beelzemon showed an image of Leomon himself and used his attack, Fist of The Beast King, and blasted through a hole to try to pull Jeri out.
Digimon Adventure tri.
Leomon protects Primary Village from an infected Ogremon, who has broken the Digi-Eggs. Ogremon injures Leomon and then runs away, with the latter giving chase. Their fight is observed by the Digimon Emperor. Tai then arrives with Leomon, who informs them of the terror the infection has unleashed on the Digital World. He decides to aid them as best he can between the worlds. Left alone, Leomon is weakened by Meicoomon's cuteness to allow them to go to the school. The Digimon desire food but lack the money, so they enter the "Creepy-Cute Costume Contest" to win free food, which draws the DigiDestined to the scene. Leomon ends up attempting to fight off an infection, leaving Palmon and Gomamon to try with deal with the Imperialdramon who appears under the Digimon Emperor's command. Rosemon amd Vikemon united with Leomon who has fought off his infection, defeat Imperialdramon and rescue Meicoomon, but they fail to apprehend the Digimon Emperor. Reunited, everyone wonders what has happened to Ken to make him take the persona of the Digimon Emperor again. As the fully reunited DigiDestined discuss their next plan, Meicoomon appears to confuse Leomon with his infected form. Meicoomon tears Leomon apart to the DigiDestined's horror, though Himekawa has a smirk unseen by the others.