Johnson Wen, who is known as Pyjama Man on Instagram, took to social media to share a video of the shocking moment, when he jumped a security barrier and rushed over to Grande, before putting his arm around her.
Her Wicked co-star Cynthia Erivo has since been hailed as a heroine after she leapt to her protection and pushed Wen away, a moment which has now gone viral.
Pyjama Man wrote: "@arianagrande @wickedmovie Dear Ariana Grande Thank You for letting me Jump on the Yellow Carpet with You."
The over-excited fan was subsequently arrested, but later freed.
Following the incident, he wrote on his Instagram Stories: "I'm free after being arrested."
However, some social media users slammed him for the stunt.
One wrote: "You're the reason why we get less appearances in Asia"
Another posted: "GET A JOB STAY AWAY FROM HER"
Red carpet crasher Wen has become known for disrupting concerts, after he did so at a Katy Perry gig in June, and The Weeknd's show in August, as well as the Paris Olympics in 2024.
Before the Wicked: For Good premiere in Singapore, he said: "I feel like I'm in a dream.
"That's my best friend Ariana Grande and I'm going to meet her. I've been dreaming about that."
Erivo's quick reactions to Wen's red-carpet crashing were widely praised by the singer's fans.
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