-Same look of being white, bald and having a goatee
-'Selling' exactly the same, such as getting punched and think blinking and shaking their heads for a few seconds
-Being booked as a monster of few words and who is unstoppable and has similar moves (only reason Ryback's undefeated streak is gone now is because they were booked into a corner with the HIAC main event because of Cena's injury)
-His almost only words of "Feed Me More" are pretty similar to "Who's Next", meaning he just wants to destroy people, so he wants to know who he gets to destroy next
-The snorting
Anyone who was around when Goldberg was should be reminded at least a little when they see Ryback, because there's no reason to think there aren't strong similarities. His whole presence and gimmick is obviously following the Goldberg path, with little difference (there's more similarities than differences as far as I can see it.) The real question for me is whether or not it matters. I don't think so, because gimmicks/personas in wrestling end up being used more than once and this is just another example of that. Hulk Hogan and Ric Flair took after Billy Graham and Buddy Rogers. Damien Sandow takes after The Genius. Antonio Cesaro is hardly the first "European who can't stand Americans." And similarly, Ryback takes after Goldberg.