WHAT’S YOUR SIGN? Gemini-Aries. Aries is a Cardinal Sign, and Gemini is a Mutable Sign. Aries is the initiator of the friendship, the one with enough get-up-and-go for the both of them, and Gemini will accept these ideas as longas they are not forced into it. They never really argue over who gets to take the credit for good ideas or eventual successes. Aries enjoys the glory, of course, and Gemini is happy to be in the background pulling the strings.