"The Korean Zombie" is back.

After losing nearly four years to the sidelines, Chan Sung Jung returned with a vengeance on Saturday night, sleeping Dennis Bermudez with a wicked uppercut early in the first round of their main event tilt at UFC Fight Night 104.

Jung now returns to a featherweight division loaded with new names and interesting possibilities. Check out reaction to his comeback performance below, plus the best of the rest from UFC Fight Night 104's main card.

Definitely some ring rust but he dusted it off like a champ! Welcome back KZ #UFCHouston — Cub Swanson (@CubSwanson) February 5, 2017

Congrats to Jung aka The Korean Zombie! Been a fan of his since the WEC. Was pulling for Dennis, as he was looking great too.#UFCHOUSTON — Aljamain Sterling (@FunkMaster_UFC) February 5, 2017

No better way to make a return like @KoreanZombieMMA did in #zombie fashion taking blows & stalking his prey to get the #KO #UFCHOUSTON — Jon SuperSaiyan Tuck (@JonCruzTuck) February 5, 2017

— Paige VanZant (@PaigeVanzantUFC) February 5, 2017

That was insane! Korean Zombie is a maniac. #UFCHouston — Matt Schnell (@DANGER_Caged) February 5, 2017

Peek a boo @ufc — Brian Ortega (@BrianTcity) February 5, 2017

Wow zombie!!!! That was 3 years of anger in that uppercut #UFCHOUSTON — Belal muhammad (@bullyb170) February 5, 2017

And he's back!! What a return #UFCHouston — scott askham (@scottaskham1) February 5, 2017

Wow! Congrats to @KoreanZombieMMA whos been training this whole time away! Had me fooled. Hope it was worth missing out on all them pay days https://t.co/DHS1AIcy3E — Stephan Bonnar (@StephanBonnar) February 5, 2017

FELICE HERRIG DEF. ALEXA GRASSO

Amazing job @feliceherrig as she dedicates this win to her little brother!!! Striking looked… https://t.co/qHP8RfMDpL — Carla Esparza (@CarlaEsparza1) February 5, 2017

Judges actually got it right. Kind of shocked. #UFCHOUSTON — The Spartan (@EliasTheodorou) February 5, 2017

Looks like a little girl fighting a women. Grasso took to long to open up. She's got the skills was it a mental thing or was felice on . — Brian Ortega (@BrianTcity) February 5, 2017

You can't deny experience. Herring is finally using that to her advantage. #UFCHouston — Jessica Jag Aguilar (@jagatt) February 5, 2017

Great performance by @feliceherrig, then calling out @karatehottiemma. Bold move, respect that. But then calling her chubby.Dick move! @ufc — Stephan Bonnar (@StephanBonnar) February 5, 2017

JAMES VICK DEF. ABEL TRUJILLO

Not gonna lie, I didn't think Vick could pull off the win (although in MMA anything can happen). Big improvements & great finish#UFCHouston — Aljamain Sterling (@FunkMaster_UFC) February 5, 2017

Vick takes the finish in the 3rd! What a card and we still have the return of The Korean Zombie #UFCHouston — scott askham (@scottaskham1) February 5, 2017

Sick Darce choke!! Beautiful Jiu Jitsu @ufc — Brian Ortega (@BrianTcity) February 5, 2017

Dang booooyyyyyy!!!!!!!! That was dope @JamesVickMMA — Phil Davis (@PhilMrWonderful) February 5, 2017

VOLKAN OEZDEMIR DEF. OVINCE SAINT PREUX

These guys are so tired and landing like 10% of their strikes #UFCHouston — Cub Swanson (@CubSwanson) February 5, 2017

Well deserved and pushed for the win! Fingrsgs volkon — Michael Johnson (@FollowTheMenace) February 5, 2017

So happy for you @volkan_oezdemir great job https://t.co/o3PNcAjgsJ — GILBERT BURNS (@GilbertDurinho) February 5, 2017

I thought OSP had two rounds but Texas judging... #ufchouston https://t.co/ZfIYn4VS52 — The Spartan (@EliasTheodorou) February 5, 2017

MARCEL FORTUNA DEF. ANTHONY HAMILTON

WOOOOOWWWW!!! What a right hand! #ufchouston — Corey Anderson UFC (@CoreyA_MMA) February 5, 2017

Well, that wasn't a slip!!! Holy upset, Batman. #ufchouston — The Spartan (@EliasTheodorou) February 5, 2017

That's a heavy boy who just hit the canvas. — Brian Ortega (@BrianTcity) February 5, 2017

Thx everyone for the love and support. Came up short tonight, but blessed beyond belief... Only God knows where we go from here... — Anthony Hamilton (@AHamilton_MMA) February 5, 2017

JESSICA ANDRADE DEF. ANGELA HILL

Round of applause for both fighters. — Will Brooks (@ILLxWillBrooks) February 5, 2017

Win or lose, Angela Hill is TUF mofo!!! Should've hit her with a "Tiger Uppercut", Sagat style!! #UFCHouston — Aljamain Sterling (@FunkMaster_UFC) February 5, 2017

Angela hill = warrior — Randy Brown (@TouchNgo_) February 5, 2017

Gotta give Hill tons of credit going in there and throwing down with Andrade #UfcHouston — Cub Swanson (@CubSwanson) February 5, 2017

Andrade is the female UFC version of John Lineker. #ufchouston — Chris Wade (@CWadeMMA) February 5, 2017

That was a great fight! Super proud of @AngieOverkill! #UFCHouston — Shannon Knapp (@shanknapp) February 5, 2017

Jessica Andrade vs Angela Hill fight of the night! Wow! #UFCHouston — walt harris (@thebigticket205) February 5, 2017

Damn ladies that was a fight! Ossuu — Ben Saunders (@bensaundersMMA) February 5, 2017

That was what you call a girl fight!! @ufc — Brian Ortega (@BrianTcity) February 5, 2017

Holy crap!! Was this the most strikes ever landed in a @ufc women's 3 round fight??!!! #ANDRADEvsHILL — Alan Jouban (@AlanJouban) February 5, 2017

When you appreciate the gesture, but you don't really feel like being picked up at the moment... ✋ #lol #goodfightladies https://t.co/ZwKYxbsLTJ — Alpha Cat Zingano (@CatZingano) February 5, 2017