The host has become the contestant. While Grant made his jungle debut on Sunday, rumour has it Amanda Keller could also be following suit. What's more, according to TV Blackbox, the former Dancing with the Stars presenters were told they would lose their wages if they didn't enter the jungle.
Placing fourth in the 2003 season of Australian Idol, pop-star Paulini plunged out of the sky as part of her dramatic arrival on Sunday's premiere. Of course, the singer is already used to spiders - having been one on last year's The Masked Singer.
The Irish chef and My Kitchen Rules host was apparently a last-minute replacement for controversial chef Pete Evans who was axed from the show just hours before filming was due to begin.
Aussie comedian, podcaster and host Ash Williams will undoubtedly provide all the laughs in the jungle, not to mention some reported romancing when it comes to a certain contestant.
Robert 'Dippa' DiPierdomenico
As the first intruder to arrive in the jungle, ex AFL star 'Dippa' joined the other celebs on day two after fellow red teammates Jess and Travis rescued him from the clutches of the creepy cowboys.
Bachelor villain turned hero, Abbie Chatfield made quite the impression on premiere night - with the Instagram influencer, podcaster and reality star smashing the creepy crawly task, securing a delicious hot meal for her team. Rumour has it she may also find romance - perhaps with Ash Williams.
She's known as a singer, TV presenter and former E Street star, and now Toni Pearen has added reality TV star to her long list of credits.
Soaring to Aussie fame after winning the fifth season of Australia's Got Talent, Jack Vidgen is now vying for the King of the Jungle. That's right, the 23-year-old has traded his microphone for a water flask on this season of I'm A Celeb.
Adam and Symon
Aussies were saddened to see this dynamic duo leave the Gogglebox couch, but those tears can be well and truly wiped as the boys have gone bush. And, this time, people will be reacting to them!
The fiesty former Real Housewives of Melbourne star has ruffled a few feathers in her time, and now that she's officially joined the campmates, she's sure to add drama and flair to the jungle.
Travis Varcoe is one of the most successful sportsmen in the industry, but does he have what it takes to be crowned King of the Jungle. By his own admission, the 32-year-old isn't too fond of creepy-crawlies - and judging by his reaction to his first challenge he may have his work cut out for him.
Funny lady Mel Buttle smashed her first jungle challenge on Sunday night. The comedienne was faced with a series of culinary questions alongside Grant Denyer and Toni Pearen, which left the trio covered in several slimy and gooey substances - but in the end, Mel claimed victory.
She's appeared on radio and television, and on Sunday, former reality TV star and Moonman in the Morning co-host Jess Eva made her debut into the Aussie jungle.
Singer, actor and social media sensation - not to mention Cody Simpson's sister - 22-year-old Alli has entered the jungle. And it looks like Abbie Chatfield has some competition for Ash William's heart.