Parents complained to the venue after he was let in, despite being clad head-to-toe in latex.
The bodysuit-wearing London theatre-goer, who also wore a “scary” harness, watched a matinee performance of The Comedy of Errors.
Staff did not intervene because the sexual fetish suit “did not contain offensive slogans”, the Sunday Telegraph said.
One angry parent said: “Imagine bringing your child to the theatre and seeing a gimp suit.
“Why was he allowed to stay in a venue that caters for the general public including children? Even if a child doesn’t know what a latex suit is or the sexual connotations, it’s still a very scary sight.”
An internal report circulated by a manager joked: “Our only worry was the patron might’ve overheated.”
It added “no further action” would be taken.
The Globe said it would review its dress code policy following the incident in May.