When the first squad of the Zibblonian invasion force landed on Earth, they were quite surprised upon encountering their first human.

“These humans don’t look nearly as dangerous as I expected,muttered Commander Glub, eyeing the strange creature before him. He turned to his security officer, Florg, made a calming gesture, and barked, “Stop shooting already!
“Yes, sir! Though, to be fair, this monster doesn’t seem to take any damage from our lasers anyway!