The Judgmental Twin

She's Zeus's twin sister, born two minutes after him and he'll never let her forget it. Erica's probably the one who gets on his case the most about his lifestyle habits.

Counterpoint to Zeus's reckless, devil-may-care attitude, Erica is very conscious of the impact her decisions make. A former Gryffindor, she's courageous and undeterred by dangerous situations. She wants to find at least some of his bastard kids, because they're family even if Zeus doesn't care to know them. Very outspoken.

She doesn't know about his not-relationship with Astrid, but she won't be thrilled when she learns about it. Her opinions will be strongly worded.