[barnstenchfartface]

Part of me (a tiny, unrealistic part) thinks they may go the full mile and introduce the whole Greek alphabet's worth of Riders. Cause, you know, alphabet focus and all.

Probably won't happen, since you know, who even has the budget for all those suits and whatnot, plus it'd likely only make the story feel bloated. But eh.

A fourth Rider at least does feel like a reasonable assumption though. Probably using the Sigma core Omega-side up. Don't know if it necessarily has to be Zeta, but it's likely.