Before each mission, you'll select a member of the Umbrella Security Service (USS) Delta Team, also known as Wolfpack. Each character has a unique class, special ability, and passive skill, making team composition crucial for success. Here are the initial characters:

- Vector (Recon): Specializes in stealth and close-quarters combat. His 'Mimicry' ability allows him to blend in with enemies, and 'Thermal Vision' highlights foes. Ideal for flanking and reconnaissance.
- Beltway (Demolitions): The heavy weapons expert. His 'Satchel Charge' can clear groups of enemies or destroy obstacles, and 'Incendiary Rounds' add fire damage. Great for crowd control and objective destruction.
- Bertha (Medic): The team's healer. Her 'Stim Pack' can instantly heal teammates, and 'First Aid Spray' provides continuous healing. Essential for sustained engagements.
- Spectre (Surveillance): Focuses on intel and ranged combat. His 'Threat Detector' reveals enemy positions, and 'Biothermal Vision' highlights infected. Excellent for target prioritization and support.
- Lupo (Assault): The frontline combatant. Her 'Body Armor' reduces incoming damage, and 'Super Soldier' temporarily boosts damage and accuracy. Perfect for leading the charge.
- Four Eyes (Field Scientist): Specializes in manipulating biological threats. Her 'Attractant' draws zombies, and 'Virus Sample' can turn enemies into allies. A unique support role for controlling the battlefield.
Consider your playstyle and the mission objectives when choosing your character. A balanced team with a medic, a damage dealer, and a support character is often the most effective.