Here is a run-down of my two characters that Altiverse Emerald knows.
Citrine (Female): A hotheaded badass with a shotgun who likes to keep Altiverse Emerald in check.
Tourmaline (Male): A scaredy-cat, who frequently runs away from any kind of conflict. Emerald has to take care of/run after him...which is a better option than the alternative.
(The alternative involves liberal use of Citrine's shotgun)