TV-Series
Description
Coredem, a golem-like Bakugan resembling Gorem and Clayf, served as Jake Vallory's primary partner throughout the Neathia-Gundalia conflict. Originating as cloned Phantom Data within Bakugan Interspace alongside Aranaut, Hawktor, and Akwimos, he briefly appeared under Spectra's temporary ownership during a test battle, defeated by Dan Kuso and Drago. Marucho later gifted him to Jake along with the Subterra Battle Gear Rock Hammer. As a clone, Coredem initially lacked speech capabilities, disappointing Jake. His combat style focused on grounded defense and offense, using seismic punches to destroy Gate Cards and generate floating rock projectiles. Dimensional holes in his palms absorbed energy from attacks, channeled through body lines via a chest lens to empower his fists. Equipping Rock Hammer visually erased his pupils during battles.

Early battles exposed Jake's inexperience, yielding losses like against Mason Brown's Avior. Julie Makimoto's coaching improved Jake's skills, enabling Coredem to defeat Avior in a rematch. Later, Coredem teamed with Darkus Akwimos to overcome Rubanoid and Buz Hornix. He collaborated with Dan and Drago to free brainwashed twins, addressing Drago as "brother." Notable clashes included evenly matched fights against Nurzak's Sabator, a mutual-freeze stalemate with Akwimos, and losses to Gundalian elites Krakix (with Vicer Gear) and Lumagrowl (with Barias Gear). In Episode 28, Kazarina's brainwashing rendered Coredem animalistic and mute. Under hypnosis, he nearly defeated Lumino Dragonoid using an unstable Advanced Fusion Ability—unique to him, it doubled or tripled his abilities and G-Power at risk of fatal overload. Hawktor's intervention aided Drago, ending in Coredem's defeat. Freed from hypnosis in Episode 35, he shattered Drago's containment tube and joined the Neathian counteroffensive.

During the war's climax, Phantom Dharak felled Coredem in one strike. Revived by Linehalt's Forbidden Power, he bid Jake an emotional farewell upon peace restoration. His Ability Cards included Phantom Blow (+400 Gs), Scale Arrow (-300 Gs to opponent), and Dimension Vortex (nullifying opponent abilities). Fusion Abilities like Rocky Field reset opponents to base G-Power while boosting his own. Physical toy variations spanned multiple attributes, with Subterra versions ranging from 640 to 780 Gs across packs. His battle helmet resembled Optimus Prime, abilities drew names from GN-001 Gundam Exia, and he shared physical traits with the Fifth Paladin.