LarkMan.EXE, known as in Japan, is a NetNavi that appears as an optional boss in MegaMan Battle Network 5 (in UnderNet 1). He is referenced on the SciLab BBS as a "cyber-lark" that someone saw flying into the UnderNet. The discussion then starts to be about the UnderNet rather than Larkman himself, though. He is an optional boss found in the UnderNet. He considers himself the freest of birds and doesn't have an operator. You can fight him for the LarkMan chips.