WWE ended tonight's episode of SmackDown with a huge shocker, as Brock Lesnar made his first appearance since losing to Roman Reigns at WrestleMania 38. While fans in the arena exploded with joy, the reaction online has been somewhat different.Lesnar's appearance came right after Reigns retained the Undisputed WWE Universal Championship in a great match against Riddle, which saw The King of Bros come close to winning. Anyway, The Beast Incarnate laid down The Bloodline with a couple of F5s to end SmackDown.Several online responses to Lesnar's return were quite hilarious. One of them even linked Stephanie McMahon's appointment as the interim CEO to it. While that isn't the case, one rightly predicted that the company would call him to come back after Cody Rhodes got injured at the start of the month.NXT Superstar Grayson Waller even got in on the action on Twitter. He invited The Beast Incarnate to NXT to help him take out Solo Sikoa, the real-life brother of Jimmy and Jey Uso.Grayson Waller@GraysonWWEWelcome back @BrockLesnar. Got any plans Tuesday night? I’ve got a little Bloodline problem myself. Happy to wear a cowboy hat if that helps 🤠 #WWENXT515Welcome back @BrockLesnar. Got any plans Tuesday night? I’ve got a little Bloodline problem myself. Happy to wear a cowboy hat if that helps 🤠 #WWENXTJust Talk Wrestling@JustTalkWrestleStephanie McMahon being gently tutored on how to summon Brock Lesnar from his deep slumber #SmackDown408Stephanie McMahon being gently tutored on how to summon Brock Lesnar from his deep slumber #SmackDown https://t.co/TcaQNFFxEUFiending For Followers ‼️@Fiend4FolIowsI knew it. twitter.com/fiend4foliows/…Fiending For Followers ‼️@Fiend4FolIowsCody Rhodes injured, Roman Reigns on a break, Sasha gone, Cena in Hollywood. Vince McMahon outside Brock Lesnars farm:43731Cody Rhodes injured, Roman Reigns on a break, Sasha gone, Cena in Hollywood. Vince McMahon outside Brock Lesnars farm: https://t.co/JWWCfbgeWRI knew it. 😂 twitter.com/fiend4foliows/…ChanMan@ChandranTheManNo Orton.No Big E.No Cody.Brock Lesnar is definitely the "break glass in case of emergency" guy #Smackdown357No Orton.No Big E.No Cody.Brock Lesnar is definitely the "break glass in case of emergency" guy #Smackdown https://t.co/lRDmjAqWktDenise 'Hollywood It Girl' Salcedo@_denisesalcedoEvery time Roman Reigns says no one is left, Brock Lesnar pops up like:837Every time Roman Reigns says no one is left, Brock Lesnar pops up like: https://t.co/F6E4FNDCuzHumble Wrestling@WrestlingHumbleIf they can get another Sami Zayn & Brock Lesnar segment out of this, it's a win in my books.355If they can get another Sami Zayn & Brock Lesnar segment out of this, it's a win in my books.However, the main consensus among WWE fans online was that of disappointment. Many are not thrilled to see Brock Lesnar and Roman Reigns renew their rivalry again, especially after their last one dominated WrestleMania season.Fans felt it was proof that Vince McMahon is still in charge of his creative duties. Twitter saw many complaints on the Last Man Standing Match announcement for SummerSlam.Top journalist Ariel Helwani was among those unhappy with WWE's decision.Ariel Helwani@arielhelwaniRoman x Brock again?! Cmon. How many times can we see this? Enough already. Zero interest in that whatsoever.43330Roman x Brock again?! Cmon. How many times can we see this? Enough already. Zero interest in that whatsoever.VinceMcMahonGoogling@VinceGooglingHOW TO PROVE IM STILL IN CHARGE twitter.com/wwe/status/153…WWE@WWEJUST ANNOUNCED: @BrockLesnar will challenge @WWERomanReigns for the Undisputed WWE Universal Title in a Last Man Standing Match at #SummerSlam! @HeymanHustle 🎟 ms.spr.ly/6018bYXpj374JUST ANNOUNCED: @BrockLesnar will challenge @WWERomanReigns for the Undisputed WWE Universal Title in a Last Man Standing Match at #SummerSlam! @HeymanHustle 🎟 ms.spr.ly/6018bYXpj https://t.co/uHRM4RWUA3HOW TO PROVE IM STILL IN CHARGE twitter.com/wwe/status/153…👑𝔸𝕕𝕒𝕞 𝔾𝕠𝕝𝕕𝕓𝕖𝕣𝕘👑@adamgoldberg28Please no more Roman vs brock we’ve been through enough. #SmackDown473Please no more Roman vs brock we’ve been through enough. #SmackDown https://t.co/kcI6XYJEbwJust Talk Wrestling@JustTalkWrestleYou genuinely.have to laugh.WWE smashes the panic button and Brock Lesnar pops out the box. It's like clockwork.Can't wait for another 2 month build for a weak match between Roman Reigns and Brock Lesnar #Smackdown798You genuinely.have to laugh.WWE smashes the panic button and Brock Lesnar pops out the box. It's like clockwork.Can't wait for another 2 month build for a weak match between Roman Reigns and Brock Lesnar #SmackdownGreg “Mongo” Bush@GregBushSKFor the love of God, how many times do we have to see this match... #WWE #SmackDown2For the love of God, how many times do we have to see this match... #WWE #SmackDownOut of context Cultaholic@cultaholic_outMr Rollins I beg for the heist number 2 twitter.com/wwe/status/153…WWE@WWEJUST ANNOUNCED: @BrockLesnar will challenge @WWERomanReigns for the Undisputed WWE Universal Title in a Last Man Standing Match at #SummerSlam! @HeymanHustle 🎟 ms.spr.ly/6018bYXpj4679JUST ANNOUNCED: @BrockLesnar will challenge @WWERomanReigns for the Undisputed WWE Universal Title in a Last Man Standing Match at #SummerSlam! @HeymanHustle 🎟 ms.spr.ly/6018bYXpj https://t.co/uHRM4RWUA3Mr Rollins I beg for the heist number 2 twitter.com/wwe/status/153…Pro Wrestling Finesse@ProWFinesseBrock Lesnar will take on Roman Reigns in a Last Man Standing match for the world titles.I'm interested but I still think they should add Seth Rollins or Bobby Lashley to the match.499Brock Lesnar will take on Roman Reigns in a Last Man Standing match for the world titles.I'm interested but I still think they should add Seth Rollins or Bobby Lashley to the match. https://t.co/F30cCOXdh7SummerSlam will be the seventh singles match between Brock Lesnar and Roman Reigns and the third one in the past year. Seth Rollins could become a much more popular figure this July, especially if he wins the Money in the Bank Ladder Match.What are Roman Reigns and Brock Lesnar's records against each other in WWE?Wrestle Views@TheWrestleViewsRoman Reigns vs Brock Lesnar at Wrestlemania 31 is still the best match they have had together The Seth Rollins cash in made it an even more memorable match84490Roman Reigns vs Brock Lesnar at Wrestlemania 31 is still the best match they have had together The Seth Rollins cash in made it an even more memorable match https://t.co/ORTcynoUxEOnly considering their six singles matches so far, The Tribal Chief has the edge over The Beast Incarnate. Reigns is 3-2 up against Lesnar in one-on-one contests, with Seth Rollins winning their first encounter.The Architect cashed in his Money in the Bank contract during the main event of WrestleMania 31, as he won Lesnar's WWE Championship by pinning Roman Reigns. As seen with the fan reactions above, many would prefer a similar outcome at SummerSlam.Recommended: This IMPACT star would choose to fight Roman Reigns & not Brock Lesnar. Here's why!