Shia LaBeouf has made headlines this past year for an array of bizarre incidents, which includes wearing a paper bag over his head with the words "I AM NOT FAMOUS ANYMORE" written across it at the premiere of 'Nymphomaniac' in February, and most recently drunkenly interrupting a performance of Broadway's 'Cabarat.'

Shia LaBeouf
LaBeouf admitted he was going through an "existential crisis"

However, while the 28 year-old star stopped by Ellen DeGeneres' talk show Friday (Oct 10th), he finally addressed his strange behaviour and admitted he may have crossed the line on a few occasions.

More: Shia LaBeouf: His Five Weirdest Moments

"I went through like an existential crisis, which turned into an exploration, really," LaBeouf told DeGeneres. "I had some hiccups, some judgment error."

The 'Fury' actor also explained that he set up an art installation entitled #IAMSORRY at a Los Angeles gallery in an effort to apologize to the public.

More: Shia LaBeouf Guilty of Smoking, Yelling at Actors at Broadway Show

"There was a lot of negativity online, so I thought, alright, let's see what this negativity is about. Let's invite it in," LaBeouf said. "I was really, truly apologetic ... I was sort of apologizing to the public in a way. I thought for sure people were going to come in there and be super mean, but it wasn't that way at all. It was very human. Once they got in there everything changed, they stopped looking at me like an object they started looking at me like a human. They were very loving."

Shia LaBeouf
LaBeouf apologized for his bizarre behaviour this past year

DeGeneres was very complimentary towards LaBeouf for speaking so candidly about these incidents, mainly because the people who constantly criticize him "are the cowards and chicken people that just stay there behind their keyboards."

The 'Transformers' actor believes online haters are motivated by the same thing that made him want to pursue acting.

"I got into this industry cause I had this void . so I thought being good at being an actor would somehow fill that void. And like you know, a lot of entertainers (are) this way, and so I think people just really want to make a mark," he said. "So people online making the comments just want to make a mark. So I think we suffer from the same thing, which is just a lack of attention and love."