Clark Kent shows up for House duty as Trudeau shows off latest Halloween costume

It's a bird. It's a plane. No, it's Justin Trudeau.

The prime minister is disguised as Clark Kent as his Halloween alter ego for 2017.

On his way to question period today, Trudeau descended the stairs sporting slicked-down hair and a blue suit with a bright red tie, surprising the assembled staff and journalists who were waiting for him.

As he got to the bottom of the stairs, he opened his shirt to expose the Superman costume hidden underneath, quipping, "It had to be done."

Trudeau wasn't the only one to put on a superhero costume. Environment and Climate Change Minister Catherine McKenna also jumped into action, dressed as a masked "Climate Crusader".

Trudeau has a history of having fun with Halloween, choosing Han Solo of "Star Wars" fame for his first year in office.

Last year he went as a pilot from the French children's book "Le Petit Prince," while his youngest son, Hadrien, went as the title character.

Not to be outdone, Conservative Leader Andrew Scheer also got into the act, dressing up as Star Trek's Captain Kirk as he handed out candy to children trick-or-treating at Stornaway, his official residence in Ottawa.

"Resistance to candy is futile," Scheer wrote on Twitter, making light of the slogan of one of Star Trek's villains, the Borg.

"My kids are just out on an away mission and I hope they come back with lots of treats and candies," Scheer said in a short video posted on Twitter. "I hope all the kids get nice and sugared up."