Lentz is a second Lieutenant of the Black Knights. He is extremely loyal to their cause, willing to commit even the most dishounrable acts in their name (unlike his counterpart, second Lieutenant Schneider). He is very bigotted and looks down upon Japanese, often referring to them as monkeys. He is very skilled and powerful though, as he is able to break through a hold set on him by a former high-ranking member of the Sanada Ninja clan, named Kaita and leave him badly injured afterwards (although he is later saved by Tsukayama Yutarō's medical expertise).