Skrillex and Deadmau5 traded shots during the late hours of Halloween. Trust us, it wasn’t nice.

During their heated exchange, we learned a few things about their relationship. Deadmau5 was one of the big names that co-signed Skrillex’s career early on as a producer and DJ. However, Deadmau5’s threw shots at Skrillex’s latest output, particularly his side project Jack Ü with Diplo and his hit single “Where Are Ü Now” that features Justin Bieber.

Skrillex fired back and accused him of bullying a fellow EDM artist over social media. “I'm forever grateful for the mau5's early support but the reality is sad. He's shriveling In his own pile of hatful [shit],” he wrote.

mau5’s response after Skrillex went after the merits of his record label: “Tell you what. Lemme borrow the lil popstar for a week, mash together a radio hit in 23 minutes, and will be good label! Yay! In summary: 2 EDM sellouts bitching about who's got a good label and or who's sad. Welcome to 2015. That's about all I'm getting outta this.”

Read the whole thing below.

.@deadmau5 I dont care bout ur personal career but the fact that u own ur own record label is sad.I feel sorry the artists you've signed — SKRILLEX (@Skrillex) November 1, 2015

.@deadmau5 youre great at finding talented people but ur leadership skills are atrocious. I'm sure you don't care tho. — SKRILLEX (@Skrillex) November 1, 2015

so the reason I've tweeted about @deadmau5 is because I want you all to know I've never bitched out. I never respond to his 💩 — SKRILLEX (@Skrillex) November 1, 2015

I'm forever grateful for the mau5's early support but the reality is sad. He's shriveling In his own pile of hatful 💩💩💩💩💩😁 — SKRILLEX (@Skrillex) November 1, 2015

.@deadmau5 if you ever need a buddy to talk to ill always be here for you. But just know your worlds effect more people than you know🙏🏻 — SKRILLEX (@Skrillex) November 1, 2015

Your words *** Auto correct 😉@anthonydimieri @deadmau5 and yea my grammar is always bad 😇 — SKRILLEX (@Skrillex) November 1, 2015

@Skrillex I count meowingtons, the other cat, and whoever the fuck else listens to this shit. — deadmau5 (@deadmau5) November 1, 2015

@Skrillex the fact that I own a record label is sad? OK. It's a sad label. Let's have a cry. I don't tell my artists what to do. Clearly. — deadmau5 (@deadmau5) November 1, 2015

Monday: emergency label meeting. Big business. Much impact. So crying. (After voodoofest) — deadmau5 (@deadmau5) November 1, 2015

. @deadmau5 no it's sad the people on your label have the worst label head ever aka you bro — SKRILLEX (@Skrillex) November 1, 2015

@Skrillex oh burrrnnnn! Yeah. We suck. But we're 18% less suckier than last quarter. — deadmau5 (@deadmau5) November 1, 2015

No clue.. Most days I just wake up to a time line that's all skrillex this or Madonna that. Hardly give a Fuck. https://t.co/vEbIMNry2p — deadmau5 (@deadmau5) November 1, 2015

@Skrillex tell you what. Lemme borrow the lil popstar for a week, mash together a radio hit in 23 minutes, and will be good label! Yay! — deadmau5 (@deadmau5) November 1, 2015

In summary: 2 EDM sellouts bitching about who's got a good label and or who's sad. Welcome to 2015. That's about all I'm getting outta this — deadmau5 (@deadmau5) November 1, 2015

@deadmau5 EDM sellouts... Coming from the dick who constantly 💩s on EDM lol — SKRILLEX (@Skrillex) November 1, 2015

Can I go to bed now? — deadmau5 (@deadmau5) November 1, 2015

.@deadmau5 yes good night you sad old washed up asshole. Here's my Halloween costume bye :) pic.twitter.com/9MX76gmIoc — SKRILLEX (@Skrillex) November 1, 2015