Heat is definitely like Serph, at least by way of not understanding certain references. Like penguins.

Nothing at all comes to mind when the word is mentioned, unlike occasional fragments of other things. "What's a penguin?" Heat's default might be irritable, but these gaps in knowledge were commonplace. Every now and then someone introduced a new word they all knew they should know but didn't.

Children. Families. The sun. (though he knew THAT one now, it was shining brightly) Penguins.