|See also:||Kree, Shi'ar, Marvel Comics|
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Chitauri in their natural form appear to be large and reptilian - however anything else is unclear since Chitauri have been mainly shown to mimic the human form.
The Chitauri army plays a major opponent to The Avengers team in the Marvel Cinematic Universe, and was led by Loki. Chitauri also makes an appearance on Agents of S.H.I.E.L.D. episode "F.Z.Z.T." where firefighters from a small town had visited NY after the Chitauri invasion and discovered a Chitauri helmet and brought it back home as a souvenir. However it was carrying an alien virus in it that slowly killed off those that were exposed to it through static electricity.