WWE Monday Night RAW last week featured a blockbuster main event. Bron Breakker and Bronson Reed, two members of Seth Rollins' stable, faced off against Sami Zayn and Penta in what was a great tag team match.Accompanying Bron and Bronson was Seth Rollins' Wiseman, Paul Heyman. The legendary manager has played a role in guiding the careers of many stars over the years, and now Auszilla and Breakker are also part of the incredible roster of talents Heyman has managed.During the tag team match, Heyman was noticeably on his phone. Michael Cole, who was on commentary for the match, tried to yell at Heyman and find out who the Hall of Famer was talking to, but Paul ignored Cole.This has sparked a lot of speculation. Who might Heyman have been talking to? Could it be a potential new member of the stable? Earlier in the night, Paul mentioned that Seth Rollins was working on a "Plan B." Was this person the plan B in question? Who could it be?Below are five mystery WWE Superstars Paul Heyman could’ve been talking to on RAW.#5. Becky Lynch joining the stable makes a lot of senseBecky Lynch is one of the most talented and brightest in the industry. The multiple-time world champion has headlined WrestleMania and has been a dominant force in WWE for years. She's the reigning Women's Intercontinental Champion.The Man is currently involved in a feud with two of the top female wrestlers in the world. The WWE Women's Intercontinental Champion is feuding with both Bayley and Lyra Valkyria, and the three will clash at Evolution next Sunday.Since Big Time Becks is married to Seth Rollins, it makes sense for the two to unite. She will bring gold to the stable and allow for some interesting manipulation. Sami, being heartbroken over his friend Becky joining the group, for instance, could really give the faction an upper hand.#4. Julius Creed & #3. Brutus Creed, The Creed Brothers now need leadershipThe Creed Brothers are one of WWE's most underrated tag teams. The duo of Brutus Creed and Julius Creed held the NXT Tag Team Championship while on the black and silver brand but have yet to recapture that success on Monday Night RAW. Julius and Brutus Creed are in a bind right now. The leader of the American Made stable, Chad Gable, suffered an injury and had surgery. This leaves them without a main coach, and now they'll be on their own alongside Ivy Nile. However, they don't necessarily have to be alone.Paul Heyman could have been calling the brother duo or even Ivy Nile. The idea could be that Paul wants to bring The Creed Brothers in, and with Chad Gable out of the picture, it would be the perfect time for him to get these young prospects under his wing.#2. Ethan Page could join WWE's main rosterEthan Page is a former star of TNA Wrestling, All Elite Wrestling, and Ring of Honor who joined WWE last year. Almost immediately after signing with the company, he defeated Trick Williams to win the NXT Championship.All Ego is the current NXT North American Champion. Despite that, there has been speculation that he could soon join WWE's main roster. If he does, there is a very real chance he could be part of a major stable.More specifically, the 35-year-old might join Seth Rollins' group. Rollins could have immediately left RAW to recruit their plan B, Ethan Page, and Heyman might be on the phone to discuss the terms of their new arrangement.#1. Brock Lesnar could finally returnBrock Lesnar is one of the most dangerous pro wrestlers in WWE history. Even outside of wrestling, he was an amateur wrestling and MMA champion. In pro wrestling, Brock won numerous world championships.The Beast hasn't been seen by WWE fans in quite some time. His last match and appearance for the sports entertainment juggernaut in general, took place at SummerSlam 2023. At that event, he was defeated by Cody Rhodes.Two years later, Lesnar could be mounting a comeback. His old advocate, Heyman, could've been reaching out in an effort to bring Brock back into the fold. If Lesnar joins Bron, Bronson, and Seth, this stable will truly be unstoppable.