Mine are 3.5 and 1.5, so hard to judge.
But the boy is wild, into trucks, loud, very OCD. Can be mean to his sister about sharing and all that, but very sweet as well.
Daughter just follows him around and wants to play what he plays. She is much tougher than him because of the pushing, not sharing, and us as parents not being able to console all the time like we could with son.
My gut says he will be very outgoing like his mom, talkative, and driven. He was walking at 10 months and talking with about 25 words by 1.5. He hates being helped and wants to do everything himself. I could also see him being a little reliant on us longer than Id like becasue my wife wont let him "fall and learn" like I will.
She is quiet, reserved like me. Didnt walk until 13 months and still can only say dada and ba ba. She is very angry when she doesn't get what she wants, though.