The Germany forward scored the opener in Tuesday's 2-0 win over Lille in the Champions League and decided to showcase his new ink after the game.
Havertz has popular superhero Batman on his arm and the caped crusader has a Champions League ball under his arm.
It's likely in tribute to the 22-year-old's winning goal in last season's final and something unique to him.
Why did Havertz delete his Batman tattoo tweet 💀💀 pic.twitter.com/7Ai9d6Wu1G— Advit (@rebelmooned) February 23, 2022
Club captain Cesar Azpilicueta and Antonio Rudiger couldn't help but give Havertz some stick, however.
Azpilicueta posted: "Hope this is a sticker from the chips and will be removed after the shower," with a facepalm emoji.
Rudiger opted for a series of laughing emojis instead. Short and sweet.
The comments were left in good fun but it's seen Havertz taken the pictures down from his Twitter and Instagram page.
Hopefully he's not regretting the decision already.
Havertz has impressed for the Blues in recent weeks and also scored the winner in the Club World Cup final earlier this month.
He started in midweek ahead of £97.5 million summer signing Romelu Lukaku, who has struggled for form since returning to Stamford Bridge.
Lukaku touched the ball seven times in his last start, a 1-0 win over Crystal Palace, which left manager Thomas Tuchel furious.
Tuchel explained what Havertz offers to the team after defeating Lille and praised his all-round play.
"I am very pleased for Kai," he said per the Mirror. "He really steps up.
"The effort is immense, the work rate is immense, the areas of the pitch he covers for us.
"He was very good, very decisive. He was never shy of defending. We had an aggressive high line today with our offensive players.
"It was a formation to have intensity and a high work rate consistently throughout the whole match and they did very well.
"Romelu struggled in the last games to deliver that."
Christian Pulisic also got on the scoresheet against Lille to ensure Chelsea take a comfortable lead to France for next month's second leg.
Featured Image Credit: Alamy & Kai Havertz/Twitter
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