Christian Slater is said to have welcomed his fourth child into the world last month. The 54-year-old actor already has Jaden, 25, and Eliana, 22, with ex-wife Ryan Haddon, as well as a five-year-old daughter with wife Brittany Lopez, 35, and People reports that their second child was born in July. The DC star recently admitted he feels less “scared” of fatherhood nowadays. He told the outlet: “Wow. I mean, it’s just different. The whole thing is different. I’m certainly a lot more present and I just love it. I think I was more scared of it the first go around and a little bit more confused, a…