The code which handles an actor is chosen by bits 0-5 of its ID (byte 0 of the actor). The ID is also used to choose the sprite (see SpritesTable).

IDs	Actor	Handler
0 12 23	Empty slot (12 is hatless Charlie)	LimitFrameRate
1-2	Charlie	GamePlayEntry
3	Flour shot	HandleFlourShot
4-5	Custard	HandleCustard
6-7	Level introduction	HandleLevelIntroduction
8-9	Sugar	HandleSugar
10-11	Level timer	HandleLevelTimer
13	Charlie's hat	HandleHat
14	Falling Charlie	HandleFallingCharlie
15	Cleared actor	HandleClearedActor
16-17	Chocolate	HandleChocolate
18-19	Cheese	HandleCheese
20-21	Peel	HandlePeel
22	Sound effect (notes)	Handler_Notes
24	End of life	HandleEndOfLife
25	Sound effect (sweep)	Handler_RisingSweep
26-29	Pike and tin can	HandlePikeAndTinCan
30-35	Tack, washer and bolt	HandleTackWasherBolt
36-37	Monster	HandleMonster
38-39	Explosion	HandleExplosion
40-42	Batter	HandleBatter
43	Batter	HandleBatter_Final
44-48	Cake	HandleCake