A genius Agumon that has a doctorate in Digital Monster studies from Digital World University. It is said that its title is plagiarized from Agumon Hakase. It is as not as knowledgeable about Digimon types and territories as Agumon Hakase, and instead it rather unscrupulously spreads lies, so caution is necessary. However, as only its feelings of rivalry for Agumon Hakase are genuine, it is diligent in not leaving any research ideas, to inconvenience Agumon Hakase. Its Special Moves are to try to enchant itself with cleverness through its hat (Nise Hakase Bou), and try to persuade the opponent with its rod (Nise Hakase Bō). It is "Nise" from top to toe.

デジタルワールド大学デジタルモンスター学博士号をもつ天才アグモン。という肩書きすらアグモン博士のパクリである。アグモン博士ほどデジモンの種類や生態に詳しくはなく、むしろ平気でウソの情報を流すため注意が必要。しかし、アグモン博士に対するライバル心だけはホンモノであり、アグモン博士を困らせるためのアイデア研究を欠かさない勤勉な一面を持つ。必殺技は、自分を賢く魅せたい帽子『ニセハカセボウ』と、相手を説得したい棒『ニセハカセボー』。何から何まで「ニセ」である。