|Artwork of a Tackle Fire from Mega Man 1|
Tackle Fire (or Changkey as they were originally called) are small angry-looking fireball enemies that originate from Fire Man's stage in Mega Man 1 and have appeared in other installments with different properties and functions such as being thrown as projectiles.
Tackle Fires are fired from the bottom of the screen and fly upwards in a straight line until off screen in groups of one to five. While they are ascending, they are completely invincible and cannot be destroyed by any means. They reappear after about four seconds after the first Tackle Fire in a group has flown off screen and descend slowly from the top of the screen in a slightly diagonal direction just above where the player is. At this point, they can be destroyed by either the Mega Buster or other weapons. Once all the Tackle Fires from a group have been destroyed or despawned, a new group is fired from the bottom of the screen if their spawn point is still on screen and performs the same behavior .
Tackle Fires are also thrown by the Mega Man 2 enemy Hothead. However, these Tackle Fires, although identical in appearance to their Mega Man 1 counterparts, are not considered enemies and are instead treated as projectiles. As a result, they cannot be shot and destroyed by the Mega Buster and most other weapons, however shield weapons such as Skull Barrier and Plant Barrier can stop them, and the Shine weapon or Proto Man's Proto Shield can deflect them back.
Being made mostly of fire, Tackle Fires can ignite Oil and TNTs they come in contact with. This includes when a Tackle Fire enemy both ascends and descends and the Tackle Fire(s) thrown from a Hothead.
Tackle Fires can be placed only at the bottom of the screen and can be set to appear in groups of one to five.
- An alternate version of the Tackle Fire/Changkey called Changkey R also appears in the intro stage of Mega Man & Bass, in a section alluding to Fire Man's stage. This variant can be attacked at any time.
- Mega Man Powered Up and Mega Man: The Wily Wars are the only games in the Mega Man series that feature Tackle Fires as both standard enemies and projectiles (via Hotheads) in the same game.
- The Tackle Fire's original name Changkey is an inside joke and reference to the name of a Capcom employee.
- Normally in the Level Builder, Tackle Fires can only be placed at the bottommost row of a screen. However, if the player switches the type of object they have selected to a different enemy or object then grabs a placed Tackle Fire, they can drag it around freely and place them anywhere on the screen which allows the Tackle Fire to spawn from anywhere on the screen.