Theo

Theo is assigned to the research of religion on civilised planets. Not that the Irken empire cares for such. It is a personal project.
His main objective is to research and note down the behaviour of inhabiting creatures, rating them by danger or rather by how easily they can be dominated by the empire.
The rest will be up to the Invaders if a planet happens to seem suitable.

Investigating planet earth for a quick check-up, he found out about religion and priests.
The impact the church has on the surrounding humans fascinates him. Following, he decided to rewrite his protocol and reassigned himself to the task to further investigate.

Tries to imitate human priests but doesn't quite get it.

Trivia:
- doesn't have a Sir unit
- talks to plants
- it's arguable whether he's defective or not, since theoretically he does what he's supposed to do

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As any other Irken, Theo doesn't want to seem suspicious on a foreign planet. Much to his annoyance, data analysis of the surrounding people and his own body height, the disguise that would work the best is as an angsty teen.
Theo doesn't know how to act as a human adolescent, nor does he know how one talks.
The disguise does have its perks as his natural green skin can simply be explained with puberty. The Irken barely understands the concept of it, but it's suitable enough for an excuse.