Hamish Blake looks like he stepped out of the 1950s. Anh Do tries on a chef's hat. Cal Wilson gets gussied up in a formal gown. And Tony Martin ties out the hipster look. For the group challenge, they all don suits of armor.

Thank God Shaun Micallef, Dailan Evans, Bianca Dye and Josh Lawson are here.

Thank God Julia Zemiro, Matthew Newton, Russell Gilbert and Ryan Shelton are here.

Thank God Bob Franklin, Angus Sampson, Fifi Box and Tahir Bilgiç are here.

Akmal Saleh is dressed in an ethnic outfit of some sort. Hamish Blake has a tie and white lab coat. First-timer Anthony Field is put in a martial arts uniform. And Kate Jenkinson looks most ladylike in her corsetted dress and petticoat.

Thank God Josh Lawson, Alan Brough, Andrew G and Jo Stanley are here.

Thank God Tahir Bilgiç, Tony Martin, Cal Wilson and Arj Barker are here.

Thank God Peter Rowsthorn, Jimeoin, Robyn Butler and Stephen K. Amos are here.

Thank God Glenn Robbins, Matthew Newton, Jo Stanley and Merrick Watts are here.

Thank God Shaun Micallef, Julia Zemiro, Tony Martin, Hamish Blake and Frank Woodley are here.

Tony Martin owns a mine, Cal Wilson is a medium impressed by fire, Franklyn Ajaye is a boxer set to help troubled kids, and Merrick Watts pilots a grounded plane. All together, they're employed by a nightclub.

Thank God Heath Franklin, Kate Langbroek, Angus Sampson and Tony Truslove are here.

Thank God Rebel Wilson, Merrick Watts, Alan Brough and Akmal Saleh are here.

Sam Pang, Urzila Carlson, Guy Montgomery, Anisa Nandaula & Hamish Blake, step through the blue door for the last time this series, on Thank God You're Here.

Anh Do is an officer in a kids show, while Julia Zemiro has traveled around the world - twice. Colin Lane loses an arm and fights the French, and Adam Hills talks about a building being built. All together, their team won the championship.

Fifi Box, Glenn Robbins, Frank Woodley and Akmal Saleh guest star.

Fifi Box is dressed in a tracksuit, Frank Woodley is fitted out in Roman era finery, Angus Sampson is scrubbed up and ready, and Peter Rowsthorn looks like a professional.

Dave Hughes, Kate Jenkinson, Anh Do and Hamish Blake improv their way through the blue door.

Santo Cilauro, Peter Rowsthorn, Robyn Butler and Angus Sampson step through the door this week.

Felicity Ward is a Aviator at a media conference, Hamish Blake is a contestant on a dating show, Josh Lawson is a vampire meeting his girlfriends parents, Angus Sampson is a police officer at a law drafting conference and Toby Truslove is a captain of a spaceship. All together they're part of the 'Showbiz Squares' game show scenario.

Akmal Saleh, Shaun Micallef, Alan Brough and Julia Zemiro guest star.

Thank God Peter Helliar, Stephen Curry, Cal Wilson and Josh Lawson are here.

Thank God Frank Woodley, Ross Noble, Matt Tilley and Julia Zemiro are here.

Angus Sampson manages a hotel, Rebel Wilson is entering royalty, Jordon Raskopoulos is a Roman scholar, and Dave Hughes is a children's' entertainer.

Matthew Newton makes his debut in a green velvet jackets. As does Shaun Micallef in an enthusiastic t-shirt. Fifi Box returns all primped and put together like a proper lady. While Angus Sampson walks through the door in a tweed and leather jacket.