Jon Snow fans are holding on to every single possibility that the fallen Lord Commander will return in the sixth season of 'Game of Thrones.' There are several 'Jon Snow Lives' fan theories being tossed around in the internet, the most recent of which is Kit Harington's appearance at Wimbledon.

However, his series costar Maisie Williams is not convinced.

The young actress, who plays Jon Snow's half-sister Arya Stark, recently addressed all of the fan theories and ruled out all possibilities of his return.

In an interview with E! Online, Williams first clarified that Kit Harington might simply like to keep his hair.

"I think people are trying to be very positive about this, like, 'It's fine. He's coming back. He's totally coming back, right? He's going to come back?'" Williams said. "I'm like, 'I don't think so. I'm very sorry!'"

"I don't know, maybe he wanted to keep the hair in the end," she added.

The actress then pointed out that the show wouldn't want Jon Snow to be a wight.

"We saw him get stabbed like five times in the chest," the actress said. "I think he's gone. I mean, I could be wrong, but I really don't think so. And people are like, 'He's going to come back as White Walker!' I'm like, 'Really? We'd bring back Jon Snow as a White Walker?' OK, you can believe what you'd like."

It was immediately pointed out that Melisandre (Carice van Houten) was at Castle Black and could possibly resurrect Jon Snow.

"I feel like she's far too selfish for all of that," Williams said.

Maisie Williams recently participated in a Twitter Q&A, where she was asked about her reaction to Jon Snow's death.

Williams is set to reprise her role as Arya Stark in the sixth season of 'Game of Thrones.'