Mercuremon

メルキューレモン

Mercuremon, also known as Mercurymon, was created from the Human Spirit of Steel by Cherubimon. He followed Cherubimon's plans and began absorbing the Digital World's Digicode bit by bit. However, he did not intend to serve Cherubimon forever.
He later acquired Seraphimon's data during his battle against the Legendary Chosen, seeking to avenge the loss of the Beast Spirit of Earth. He would subsequently evolve into Sephirothmon during his fight with the Chosen in an attempt to defeat them. While inside Sephirothmon, Mercuremon battled Kanbara Takuya. He used Seraphimon's data to evolve into Black Seraphimon. But he was defeated, and his Human Spirit of Steel was scanned. Nevertheless, he continued to exist for a short time longer as Sephirothmon.