BowlMan.EXE

BowlMan.EXE is a NetNavi which body is completely made from things related to bowling. In fact, he uses bowling balls and pins as an attack.

MegaMan Battle Network 3
BowlMan appears in the Blue version of the game, while MistMan.EXE is in his place in the White version. He is Rank 2 in the Undernet and appears in the NetBattle Computer from the TV Studio in Beach Street. After being defeated, he'll give up his rank 2 to MegaMan and tell him where to find "S". BowlMan can be rebattled in that exact location.

MegaMan NT Warrior Axess
BowlMan first appears in episode 6 of Axess as a NetNavi in a bowling alley, but a Darkloid presents him with a Dark Chip to help him improve his game. BowlMan then becomes a Darkloid after using it and battles on their behalf. He is later revived by Dr. Regal but is deleted by MegaMan with Metal Soul.