MetalGarurumon is the Mega-level evolved form of Gabumon, the partner Digimon of Yamato Ishida, in the anime Digimon Adventure: (2020). The transformation is the culmination of Gabumon's evolution line, following the Ultimate-level WereGarurumon. As a final form, MetalGarurumon is a massive, wolf-like cyborg whose body has been almost entirely metallized. The official profile describes it as a final form of Garurumon that has been enhanced by making most of its body metallic, yet it retains its natural keenness and agility. Its frame is equipped with countless hidden weapons, including missiles, claws, and sensor arrays. The four laser sights at the tip of its nose emit invisible beams, and it uses a wide range of sensors—infrared, X-ray, and others—to analyze targets, making escape impossible even in total darkness. Mechanical arms extending from its back can emit photoelectric beam wings, granting the ability to fly through digital space at incredible speed.

In terms of personality, MetalGarurumon is not a separate character but a direct extension of Gabumon's loyal and protective nature. Gabumon is gentle, earnest, and deeply devoted to Yamato, always striving to understand and support his partner. This devotion becomes the foundation for unlocking the Mega form, which represents the ultimate expression of their bond. MetalGarurumon's motivations are inherently tied to protecting Yamato, his friends, and the Digital World from threats. The form first appears in episode 45 of Digimon Adventure: 2020, titled Activate, MetalGarurumon, in a relatively lighthearted episode featuring a race against the Digimon Machmon. The evolution is triggered by Yamato's unwavering friendship and his willingness to reach out to a troubled opponent, transforming a personal connection into raw power. Unlike the more dramatic debut of WarGreymon, MetalGarurumon's first appearance emphasizes the theme of camaraderie over high-stakes combat, showcasing the bond between Gabumon and Yamato as the key to unlocking this immense strength.

MetalGarurumon's role in the story is that of a powerful ally and a symbol of Yamato's growth. As the partner of Yamato, who initially struggles with a lone-wolf attitude, MetalGarurumon represents the strength that comes from trusting others and valuing friendship. Throughout Digimon Adventure: 2020, the duo develops from a cautious partnership to an unshakable team, and the Mega evolution serves as a milestone in that journey. Key relationships include that with Yamato, the other DigiDestined, and their Digimon partners, particularly Agumon and WarGreymon. Later in the series, Gabumon also gains an alternate Mega form, CresGarurumon, which appears in a moonlit duel against Zanbamon. However, MetalGarurumon remains the primary Mega form and a core component of the group's fighting force, often joining WarGreymon in major battles.

Notable abilities are defined by overwhelming firepower and analytical precision. The signature move, Freezing Breath, discharges a blast of air at absolute zero that freezes anything it touches, instantly halting the vital functions of any living creature hit. Another powerful attack is Garuru Tomahawk, which launches a large missile called the Freeze Bomber from its chest. MetalGarurumon can also perform Ice Wolf Claw, firing all weapons on its body simultaneously to obliterate foes. Its sensors and flight capability make it a formidable scout and long-range combatant, while its metallic body provides high durability. Together, these traits make MetalGarurumon one of the most technologically advanced and strategically versatile Mega-level Digimon in the series, embodying the balance of instinct and refinement that defines Gabumon's evolution path.