Use it from the character's inventory, and if another character later in the turn order (or earlier in the next turn) is close enough to use it, pass it to them.

Angry - Happy - Angry : vent steam

Angry - Angry - Sleepy : discharges electricity (can't use lightning bolt attack, unless it gets charged again by air damage)

Sleepy - Sleepy - Happy : deactivate melee attacks

Angry - Angry - Angry : deactivate controller
Happy - Happy - Happy : "party time"