Kameo assist or follow-up command.

Jax (Kameo) moves, skills and special abilities
Jax is a Mortal Kombat 1 Kameo assist fighter. This profile lists 8 sourced assist, follow-up, throw and fatality commands. Stance and follow-up requirements are shown with each entry; brutality conditions and opponent-specific copied moves still require further checking.
Special Moves
6Kameo assist or follow-up command.
Requirements / unlock: opponent in air
Command details & verification
Kameo assist or follow-up command.
Requirements / unlock: opponent in air
Command details & verification
Kameo assist or follow-up command.
Command details & verification
Kameo assist or follow-up command.
Requirements / unlock: grabs opponent's cameo
Command details & verification
Kameo assist or follow-up command.
Requirements / unlock: grabs opponent's cameo
Command details & verification
Throws
1Kameo throw command.
Requirements / unlock: Close
Command details & verification
Fatalities
1Kameo finisher command.
Requirements / unlock: Mid-Far
Command details & verification
Brutalities
3Kameo brutality command; perform the base move as the finishing hit while meeting the listed conditions.
Requirements / unlock: Unlock this Brutality in-game. (Hold Kameo); Final Hit Must Come From Multi-Slam
Command details & verification
Kameo brutality command; perform the base move as the finishing hit while meeting the listed conditions.
Requirements / unlock: Unlock this Brutality in-game. (Hold Kameo); Victim Must Be In Air; Final Hit Must Come From Close Back Breaker Or Far Back Breaker
Command details & verification
Kameo brutality command; perform the base move as the finishing hit while meeting the listed conditions.
Requirements / unlock: Unlock this Brutality in-game. (Hold Back), During Hit; Final Hit Must Come From Energy Wave