#2 Dominik
Currently, Dominik is a mainstay on WWE RAW and is involved in a heated angle with Seth Rollins. Around 15 years ago, Dominik made several appearances for WWE when he was inserted into the feud between Eddie Guerrero and Rey Mysterio. The rivalry saw Eddie uttering those iconic words to Dominik: "I'm your papi!", declaring that he was the real father of the kid. This led to a Ladder match at WWE SummerSlam, with Dominik's custody on the line.
The match saw Eddie's wife Vickie Guerrero interfering in the end and helping Mysterio win the match and the custody of Dominik. The feud came to an end on an episode of SmackDown soon after, when Eddie defeated Rey inside a steel cage.
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Rey vs Eddie at Summerlam 2005:
Dominik has been actively appearing on WWE TV for the past several months. He was viciously attacked by Brock Lesnar on an episode of RAW, back in September 2019. Looking at how Dominik is handling himself in his feud with Rollins currently, it seems like he has a bright future ahead of him in WWE.