User blog comment:Gundam Legilis/Rooster Teeth's animatiors/@comment-50.8.205.207-20140716045744/@comment-50.8.205.207-20140716182409

The thing is that Master Chief is the nickname of Master Chief Petty Officer John-117.

There are also only ever 150 spartan 2s possible, the only ones who would have that armor.

The Spartan in Haloid is therefore not Master Chief, just looks like him