|Jammers as they appear in intro sequence of the first Mega Man Star Force.|
|For the Mega Man Battle Network 4 character, see HeelNavi|
A Jammer, known as Jamminger (ジャミンガー Jamingā?) in Japan, is the Wave Change of a human and an EM virus in Mega Man Star Force. FM-ians pick a human to infect with their viruses and then they dispatch a virus to that human. The virus has more control in the body than the human host.
In the game
Early in the game, an unknown Jammer appears inside a Comp Space of a car parked near the condo in Geo Stelar's neighborhood of Echo Ridge. Omega-Xis sensing the presence of an enemy FM-ian, instructs Geo to seek it out. As Mega Man, Geo eventually finds and defeats the Jammer (who was just a car thief), initially mistaking him for the FM-ian they were searching for.
Sometime later, another Jammer appears and drops a chandelier on Geo at school. He fights and defeats Mega Man, being the first boss to do so. The same Jammer reappears in the Libra Scales incident; however, this time Mega Man won with the power of the Star Break.
Later, after Geo and Omega-Xis had separated, three Jammers beat Geo to a pulp, but the Satellite Admins arrive and delete them. Sometime later, a guardian Jammer was hit by one of PitcherMan's baseballs when Geo tried to reunite with Omega-Xis.
In the anime
In battle, Jammers are shown to use the following attacks:
- Punch: Jammers will move in front of the player and throw a punch that is dodgeable and blockable.
- Machine gun: Jammers will stand in one column and fire their machine gun. This attack can be evaded and is blockable.
All though not used in battle, Jammers can also make and throw EM Wave balls. When three Jammers took Zack, Bud and Luna hostage, one creates a ball in his hand and before he could throw it Mega Man shot it to protect his friends.