Meat's appearance can be Canadian wearing complete olive green clothing (as Canadian Task Force soldiers are the only ones with olive green t-shirts) and a low visibility Canadian flag on the back of his vest, or Indigenous Australian with the same appearance as the driver at the start of the level.
He is shown to be multilingual, as he is able to warn the civilians in Portuguese, the native tongue of Brazil. He starts by saying "Este lugar não é seguro" meaning "This place isn't safe".
At the picture at the end of the credits, he can be seen on the bottom right.
Meat is mentioned in Soap's Journal. Oddly, Soap claims that it was Rojas's assistants' shooting spree that killed Meat, when in fact it was Driver who died due to the spree. Meat died later in the favela. Soap also mentions that Meat's serial number is "KL8102".
If Meat survives the entire onslaught with all enemies of the Favela gang killed in the first phase, when he reaches a certain point passed the neighborhood, and is approached by Roach within a certain radius, he will still die even with no enemies around. Meaning he was never scripted to live throughout the first phase. This also applies with Royce.