| Alert | Parameters | Meaning |
| spawn | none | The character has just been spawned (called after the constructor) |
| in_water | none | The character has just entered water |
| put_away | none | The character was just placed another character's inventory |
| taken_out | none | The character was just removed from another character's inventory |
| cleaned_up (not used) | none | The character has died, and is now being directed to "clean itself up" |
| dropped | none | The character was just dropped by another |
| grabbed | none | The character was just grabbed by another |
| used | none | The character was just "used," either by another (if it's a weapon or item) or by itself (as in unarmed attacks) |
| hit_ground | none | The character was in the air, and is now on the ground (never as a result of being dropped) |
| bumped | bumped_into: a character | The character collided with another character |
| blocked (not used) | none | The character ran into a passage that is blocked |
| healed (not used) | healed_by: a character | The character was healed by another |
| attacked (not used) | attacked_by: a character | The character was damaged by another |
| killed (not used) | attacked_by: a character | The character was killed by another |
| thrown | thrown_by: a character | The character was thrown by another |
| swipe | none | The character reached an AL or AR frame (see ?) |
| crushed | none | The character was crushed by a passage |
| passage_blocked | blocked_by: a passage | The character ran into a passage that was blocked |
| disaffirmed (not used) | none | ? |
| particle_bumped | particle: either a particle type or a particle reference (see ZippyParticles) bumped_into: a character | A particle spawned by this character bumped into another character |
| particle_hitwater | particle: see ZippyParticles | A particle spawned by this character hit the water |
| particle_hitwall | particle: see ZippyParticles | A particle spawned by this character hit a wall |
| particle_hitground | particle: see ZippyParticles | A particle spawned by this character hit the ground |
| particle_timedout | particle: see ZippyParticles | A particle spawned by this character ran out of time |
| particle_lastframe | particle: see ZippyParticles | A particle spawned by this character reached the last frame of its animation |
| remove | none | The character will be removed from the game at the end of this update |