Local media reports say Mr Wen, who was unrepresented, intends to plead guilty.
This is not the first time Mr Wen, who describes himself as a “Troll Most Hated”, has invaded a concert or event.
His Instagram feed includes clips of him disrupting other celebrity events, including jumping on stage at Katy Perry’s Sydney concert in June this year. He did the same at a concert by The Chainsmokers last December.
If found guilty, he may be fined up to S$2000 ($1540; £1170).
Fans had earlier called for him to be arrested and deported.
“There needs to be action [taken] against him as this is clearly a criminal offence,” wrote an Instagram user, in a comment a video Mr Wen posted of his act.
“Oh wow so you do this a lot… how aren’t you in jail?” one Instagram user wrote.
Several accused Mr Wen of “re-traumatising” Grande, who has spoken of experiencing post-traumatic stress disorder after a suicide bomb attack at the end of her May 2017 concert in Manchester, killing 22 people and injuring hundreds.
“Ariana has been through so many scary things… and at her Manchester concert and you thought it would be fun to jump the barricade?” said another comment on Instagram.
Some fans also criticised security officers at the Thursday event for not being vigilant enough; while others called for social media platforms to ban Mr Wen’s videos.
In clips circulating online, Grande appeared shocked when she was grabbed by the intruder. Her co-stars Michelle Yeoh and Erivo can be seen comforting her while Mr Wen was escorted away by security.
Grande has not commented on the incident, and the rest of the event proceeded as planned.
The BBC has reached out to Singapore’s police and immigration authority for comment.
