Reality star Megan McKenna has been tipped to join the I'm A Celebrity line up.
Anne Hegerty is also heading into the jungle, a woman who can strike fear into anyone when she features on the daytime TV show The Chase.
"I think some people may have a problem with me", said Barrowman, 51, who will compete with celebrities including The Inbetweeners actor Emily Atack, football manager Harry Redknapp and Coronation Street star Sair Khan for the jungle crown.
Get Me Out Of Here! alongside Declan Donnelly when the show returns on Sunday night.
He added: 'I have given her a few survival tips, like always check inside your shoes before you put them on and what to do if you get a tick or a leech attach itself to you - but I had to stop because I thought she was going to faint'.
"I will have to really figure that one out when it happens as I know filming Torchwood, there was a scene where we filmed in a coffin".
"I don't think a romance that starts in the cauldron of an experience like that is going to last outside, so I am not (looking for romance)", he said.
"It was see-through and so I could see space but I couldn't do it".
He said he was ready for anything the jungle could throw at him-apart from any claustrophobic Bushtucker trials.
"You feel responsible, however many people support your team every week".
'I'm going to try and send you lots of little pieces as I find them.
Harry Redknapp is officially the highest paid I'm A Celebrity, Get Me Out Of Here! contestant ever.
"So no, I don't think doing this will be tougher".
"But to be honest, I have not actually watched the programme!"
"For me eating testicles is going to be the worst", said the 20-year-old actor. I think she'll be unbelievable and obviously Ant will be back next year.
The long-standing I'm A Celeb duo of Ant and Dec will be torn apart for the first time.
She will be joining Dec for this year's series, as Ant McPartlin continues to take time away from TV work.