Mason - Who is a Spartan will use any weapon available to him although he prefers having a Squad Automatic Weapon (SAW for short) and a Railgun. He will also use the Katana he has instead of a knife.

Ethan - Ethan's weapons are a Suppressed Sub-Machine Gun (Like the one you get in Halo 3 ODST but has the looks of the Halo 5 SMG) and a Halo 4 styled Sniper Rifle.

Zachary - Since he's a pilot the only weapon he has when he's on the ground is a M6G-H Tactical Magnum, but his other weapons are the vehicles he pilots.

Michael - Since he's a Marine he'll use whatever weapon is best suited to the situation he's in though he prefers having a Shotgun and a Sticky Detonator.

Megan - Since she's the medic she doesn't have a weapon but has a medical scanner which looks like a Covenant Plasma Pistol

Jess and Rosie - They won't have weapons because They'll be stationed on the ship that Zachary is in command of the name of the ship is The UNSC Final Frontier. (The ship is like a mixture of The UNSC Infinity, The UNSC Grafton and The UNSC Spirit Of Fire, so it's one of the biggest ship in the UNSC's arsenal but the draw back of the ship is It's still a prototype.)

Ellie - Will only have one weapon a BR-55 Service Rifle but it is on semi-auto so she can have more accurate shots.