You might be wondering why you’re suddenly seeing people ask questions on Twitter like, “Who is the Lion?” and “Anyone know who The Unicorn is?” Well, you’re in for a treat. Those are just a few of the “characters” on the new FOX network show that pits secret celebrity competitors against one another in a singing contest where they are totally hidden by elaborate costumes — a little show called The Masked Singer.

The Masked Singer had the biggest Nielsen live-plus-three gain of any unscripted premiere ever, according to Variety. In simpler terms, that means the ratings were pretty impressive. TV Line reported that the debut drew 9.4 million viewers, and as interest in the series grows, those numbers may get even more stunning. Are you wondering what all the fuss is about? We’ve got the answers.

When is The Masked Singer on?

The Masked Singer airs Wednesdays at 9:00 p.m. EST on Fox, according to the network’s website. One performer will be eliminated every week, so you have to tune in to every episode if you want to know the identity of every singer! The show premiered on Jan. 2, so if you want to get in on the fun, you only have to catch up on one episode so far.

Who are the judges on The Masked Singer?

The host of the singing competition is Nick Cannon. The panelists/judges are Ken Jeong, Jenny McCarthy, Nicole Scherzinger, and Robin Thicke. Robin and Nicole are singers themselves, so you’d think they’d have the upper hand on knowing who some of the secret performers are, but you’d be surprised!

Who are the singers on The Masked Singer?

That’s the fun of it all! No one knows who each singer on the show is until they are unmasked. Each participant wears a full costume — complete with a full face mask to conceal their identity — while they perform, and they don’t take off their masks unless they lose in a head-to-head match-up each episode.

The performers could be professional singers, athletes, and more. They offer clues every week to give viewers and judges alike the chance to guess who they are before they take their masks off, but the hints can be tricky. For example, Nicole asked The Hippo — who was the first singer revealed on The Masked Singer — “Are you a basketball player?” He replied that his favorite pastime is “bowling.” The Hippo turned out to be Pittsburgh Steelers’ Antonio Brown, who has been to a Super Bowl. Get it?

Can you just tell me who The Lion is already?! Is it a Kardashian?

We don’t know! You’ve got to tune in and find out just like the rest of us.