What is halo characters?

1. Master Chief - Also known as John-117, he is the protagonist of the Halo series. He is a supersoldier of the SPARTAN-II project and is known for his iconic green armor and helmet.

2. Cortana - An advanced AI created by Dr. Catherine Halsey, Cortana serves as Master Chief's companion and assists him throughout the series. She is known for her intelligence and wit.

3. Arbiter - The Arbiter is a former Covenant Elite warrior who becomes a key ally to Master Chief in the later games. He plays a crucial role in the battle against the Covenant and the Flood.

4. Sgt. Avery Johnson - A Marine Corps sergeant who has fought alongside Master Chief in numerous battles. He is known for his tough demeanor and unwavering loyalty to his comrades.

5. Thel 'Vadam - Also known as the Arbiter, Thel 'Vadam becomes a playable character in Halo 2 and serves as the protagonist in Halo 2 and Halo 3. He is a prominent figure in the Covenant hierarchy and later turns against them to join forces with humanity.

6. Cortana - An AI companion to Master Chief, Cortana possesses unique abilities and is a key player in the Halo universe's narrative. She is deeply connected to Master Chief and plays a crucial role in his missions.

7. Sgt. Forge - A Marine Corps sergeant who is featured in Halo Wars, Sgt. Forge is a skilled soldier and leader. His bravery and determination make him a memorable character in the Halo series.

8. Emile-A239 - A member of Noble Team in Halo: Reach, Emile-A239 is known for his aggressive and confrontational personality. He is a skilled marksman and plays a key role in the game's story.

These are just a few of the many memorable characters in the Halo series, each with their own unique personalities and contributions to the story.