Here are some early character realisations. Colours are approximate in this context as the Halo 2 based screen shots have been auto levelled to make it easier to read. So, generally, they will be darker in colour.
Actor: Mel Gibson Character: 'Mad' Max Rockatansky/The Road Warrior
In The Movie: 
Halo version: 
Movie weapon/s: Sawn Off Shotgun
Halo weapon substitute:
Standard Shotgun
Notes:No black is available in Halo 2 - to stop you blending in too much. Steel is the closest colour.
Non-Sawn off is good substitute.
Vehicle is Warthog
Tank going backwards with turret aimed low for tanker.
Actor: Bruce Spence
Character: Gyro Captain
In The Movie: 
Halo version: 
Movie weapon/s:
Crossbow
Molotov cocktails
Halo weapon substitute:Covenant Plasma rifle for crossbow
Sticky grenades/rockets for molotov cocktails
Notes:Banshee for Gyro copter.
Actor: Mike PrestonCharacter: Pappagallo
In The Movie: 
Halo version: 
Movie weapon/s: Flame thrower/turret
Halo weapon substitute:
Covenant Turret
Notes:Vehicle will be warthog
Actor: Max PhippsCharacter: Toadie
In The Movie: 
Halo version: Movie weapon/s: None
Halo weapon substitute:
None
Notes:Loses fingers in the movie when attempting to catch boomerang. Will instead attempt to catch charged plasma pistol burst.
Explodes when taking max's fuel.
Actor: Vernon WellsCharacter: Wez
In The Movie: 
Halo version: 
Movie weapon/s:
Wrist crosbow
Halo weapon substitute:Plasma rifle or even Covenant carbine.
Notes:Motorcycle will be ghost. No golden youth on the back, though we will still have to kill him off. Go figure that one out.
Actor: Kjell NilssonCharacter: Lord Humungous
In The Movie: 
Halo version: 
Movie weapon/s:
Scoped handgun
Spear-ish thing
Halo weapon substitute:Battle rifle. Thougha standard magnum may have to do- the scope in Halo 2 has disappeared from the handun, so the magnum may have to suffice.
Spear... plasma pistol charged? Or perhaps brute shot?
Notes:His vehicle will be a Spectre
Actor: Emil MintyCharacter: Feral Kid
In The Movie: 
Halo version: Movie weapon/s:
Steel Boomerang
Halo weapon substitute:
Plasma pistol charged up
Notes:Will not look little, will have to film from above
Actor: Virginia HeyCharacter: The Warrior Woman
In The Movie: 
Halo version: 
Movie weapon/s:
Bow n arrow
Halo weapon substitute:Plasma rifle or covenant carbine.
Notes:
All white and all right.
Actor: Willam ZappaCharacter: Zetta
In The Movie: 
Halo version: 
Movie weapon/s:
Molotov cocktail
Halo weapon substitute:Sticky grenades
Notes:Gets killed on tank.
Actor: Arkie Whitely Character: Captains Girl
In The Movie: 
Halo version: Movie weapon/s:
None
Halo weapon substitute:None
Notes:
Actor: Steve J. Spears Character: Mechanic
In The Movie: Halo version: Movie weapon/s:
Molotov Cocktail
Halo weapon substitute:Sticky grenade
Notes:Is incapacitated in teh movie. About to be fully capable in our version.
Actor: Syd Heylen Character: Curmudgeon
In The Movie: Halo version: Movie weapon/s:
None
Halo weapon substitute:
None
Notes:
Can be played by generic white/yellow spartan
Actor: Moira Claux Character: Big Rebecca
In The Movie: Halo version: Movie weapon/s:
Bow n Arrow
Halo weapon substitute:Plasma/covenant carbine
Notes:Generic look once again.
Actor: David Downer Character: Nathan
In The Movie: Halo version: 
Movie weapon/s:
None
Halo weapon substitute:
None
Notes:Dies. thats sad. Cannot be carried by max.
Actor: David Slingsby Character: Quiet Man
In The Movie: Halo version: Movie weapon/s:
Bow n arrow
Halo weapon substitute:
Plasma rifle/covenant carbine
Notes:Won't be head butted. Will be whacked by Wez though.
Actor: Kristoffer Greaves Character: Mechanic's Assistant
In The Movie: Halo version: Generic defender- white/yellow
Movie weapon/s: None
Halo weapon substitute:
None
Notes:
Actor: Max Fairchild Character: Broken Victim
In The Movie: Halo version: Movie weapon/s:
None
Halo weapon substitute:None
Notes:Generic defender
Actor: Tyler CoppinCharacter: Defiant Victim
In The Movie: Halo version: Movie weapon/s:
None
Halo weapon substitute:None
Notes:Generic defender
Actor: Jim Brown Character: Golden Youth (as Jimmy Brown)
In The Movie: Halo version: Will be all gold alien
Movie weapon/s:
None
Halo weapon substitute:
None
Notes:Cops it in the head
Actor: Tony Deary Character: Grinning Mohawker
In The Movie: Halo version: Movie weapon/s: Halo weapon substitute:Notes:no idea who this really is
Actor: Kathleen McKay Character: Victim (with Nathan)
In The Movie: Halo version: Movie weapon/s:
None
Halo weapon substitute:
None
Notes:Generic defender- like Big rebecca
Actor: Guy Norris Character: Bearclaw Mohawk
In The Movie: Halo version: 
Movie weapon/s:
Claw.
Halo weapon substitute:
Needler
Notes:really only in the end- as well as max sneaking out of camp scenes.
