Yes, Diddy is a horrible person, but, as I said, all sins are equally horrible and opposite to God's will. It doesn't make sense to our three pound brains, but all in all, we are just as much evil as Diddy, he just does things that are unacceptable to humans. And while they are heinous crimes against the Lord too, He will forgive Diddy if he pursues God and realizes how horrible and treacherous he is to the one true God. After all, if people are truly sorry, wouldn't it be just as horrible to count it against them in your heart? Even if they aren't sorry, you shouldn't be angry with them, for temptation is very hard to deal with, and if you're being tempted to be angry, then you're no worse then Diddy, since all sin is equal. I'm not saying it's likely that Diddy will find God, but I'm saying it's possible and I pray he does.
As for the Revalation thing, I think some so-called Christians will go to Hell, but only because they spent too much time worrying about the things they do rather than pursuing a relationship and understanding of Christ. I hope all this helps