He first appears on a cruise ship as Dingo's Navi. He defeats the NetNavi of a rich business man. Later, Dingo uses TomahawkMan to steal the auction item and tries to capsize the ship. The player has to stop him using Colonel. After his defeat, he agrees to join Team Colonel. He fights with Team Colonel against Dark MegaMan in his first Liberation Mission, and helps in the fight against various Darkloids in other Liberation Missions. When the player infiltrates Nebula's Base, he and NumberMan fight against the revived CloudMan in Nebula Comp 3. After the defeat of CloudMan, NumberMan and TomahawkMan are sucked into the Dark Galaxy by CosmoMan. He later appears with the rest of Team Colonel to help MegaMan to defeat Nebula Grey.
TomahawkMan appears again in the CybeastFalzar version, with Dingo giving lessons on NetBattling. To gain the Tomahawk Cross, MegaMan must complete a challenge where he has to chop down continuously growing totem poles. After completing the challenge, MegaMan gains the Tomahawk Cross and TomahawkMan becomes available as a playable character.
Status Guard: TomahawkMan cannot be affected by status ailments, unless by paralysis through Counter Hits or any form of poison.
Totem-sama: In Battle Network 5, TomahawkMan comes accompanied with a totem pole at the back of his area. The totem pole will occasionally reveal a face, each face doing one of the following (hitting the totem pole enough times will turn the face away):
Totem Meteor: The top face appears, dropping meteors onto the player's area.
Totem Shield: The middle face appears, making TomahawkMan invincible.
Totem Recovery: The bottom face appears, healing TomahawkMan.
Tomahawk Swing: TomahawkMan's signature move, used as his special chip in Battle Network 5 and his Charge Shot in Battle Network 6. TomahawkMan swings his axe in a fashion similar to Life Sword.
Tomahawk Air Raid: TomahawkMan throws his axe, and it boomerangs back to him, passing through the player's column at the same time. In Battle Network 6, he only performs this attack on the left middle panel when MegaMan is at the left column (or three squares in front of him). In Battle Network 5, this serves as his Charge Shot and acts like a Boomer chip - however, if launched on the middle row, it will only bounce back after making contact with an enemy.
Tomahawk Rolling: Used only in Battle Network 5. TomahawkMan stands atop his totem pole and rolls towards the player, crashing down on the player's current position.
Eagle Dash: Used only in Battle Network 6. TomahawkMan's eagle will occasionally dash down the middle row.
Eagle Tomahawk: Used only in Battle Network 6, as his special chip and finisher. TomahawkMan's eagle fuses with his axe and Tomahawkman smashes the ground with it, destroying all panels in the same row as the attack was used. This attack also destroys the chip in hand (similar to Roll Arrow).
With TomahawkMan's charge attack, his tomahawk is thrown like a boomerang chip. This attack is non-elemental. He has both Super Armour and Status Guard. His Liberation move, Tomahawk Swing destroys panels in a 2x3 area if successful, destroying all items except for barrier keys and traps. The traps are activated after the liberation. His Navi chip has him swinging his tomahawk in a 2x3 area. Charge up a non dimming Wood chip to double its power.