"He's going to be an amazing dad. As inspired as he is before his baby, to do well and (be) motivated to succeed, he's going to be even more so. It's going to be quadruple... I told him this when I found out that he was going to be a daddy. I said, 'Your life is going to change, and it's all for the better.'" DWAYNE JOHNSON is confident his G.I. Joe: RETALIATION co-star CHANNING TATUM will be a great father. The actor's wife, Jenna Dewan-Tatum, is due to give birth to the couple's first child this summer (13).