Academy City's 2nd Ranked Level 5 esper from [[Toaru Majutsu no Index]]. His ability is known as Dark Matter (未元物質, Migen Busshitsu lit. "Unknown Matter"). He often uses his powers to construct six large feathered [[white wings]] made of Dark Matter, giving him an [[angel wings|angel]]-like appearance, ironic considering he's arguably the most evil of all the Level 5s.

He has [[medium hair|medium length]] [[brown hair]] with [[bangs]] and [[brown eyes]], and usually wears a [[purple suit|purple]] / [[brown suit|brownish]] [[suit]] with [[pants]] and a [[jacket]] over an [[open shirt|open]] [[white shirt|white]] [[dress shirt|dress]] [[shirt]] over a [[red sweater|red]] [[sweater]] and [[brown footwear|brown]] [[shoes]]. He usually sports a [[expressionless|cool, stoic]], facial expression.

During the events of [[Toaru Majutsu no Index: New Testament]], Teitoku is defeated by a rogue beetle he created, which then proceeds to take over his appearance and powers, but is now a benevolent and kind person.
垣根帝督