darkSpyro

I know all of the Doom Raiders are not going to be playable, according to Yroc as he asked at the event which is very unfortunate, But if they WERE all to be playable, what do you think would be their catchphrase?

Confirmed

Golden Queen: "I reign supreme!"
Wolfgang: "Let there be rock!"

Guesses

Chef Pepper Jack: "Let's get cookin'!"
Nightshade: "Dark days ahead!"
Dreamcatcher: "Tell me I'm not dreaming!"
Chompy Mage: "Chompy power!"
Luminous: "Reach for the stars!"
Pain-Yatta: "Who wants candy?"
The Gulper: "Me want soda!"
Krankcase: "The Doctor is in!"

Some of these were really hard to choose because they don't have very many entering quotes, and some aren't even in Battlecast.

All the ones you said are the ones I would have said.

Luminous' and Dreamcatcher's are my favorite :3

I seriously hope they get toy forms. Sadly, Dreamcatcher has a very low chance. It just seems wrong not having all the Doom Raiders as toys. I kinda hope Yroc is wrong... but it leaves more options... like Frightbeard and Mesmerelda,

After extensive research (and by that I mean looking at the wiki for a few minutes) I have determined that it is incredibly likely that most of the villains will have quotes from Battlecast as their catchphrases, mostly due to Golden Queen's catchphrase being only in Battlecast. So, here's a list of potential catchphrases based on this research:

Dreamcatcher: "Welcome to your nightmare!"
Pepper jack: "Hot off the grill!"
Chompy Mage: "Chompy power!"
Pain-Yatta: "Who wants candy!?"
Krankcase: "The doctor is in!"
Chill Bill: "I am to freeze!"

And yes, I am assuming that Chill Bill is going to be the Water villain. Everything seems to be pointing to him.

nooooooo I want Gulper

I don't feel like Gulper could be a Sensei canonically. He probably can't even read, I doubt he can teach anything to anyone.

he can teach the importance of soda

I just realized what you chose for Luminous' catchphrase is actually Star Strike's catchphrase already :3
Here's what I'd want for all of the villains I'm hoping are Senseis

Bad Juju: "Here Strikes Da Lightning!"
Pain-Yatta: "It's Time For Candy!"
Chill Bill: "I Aim To Freeze!"
Cuckoo Clocker: "It's Brawlin' Time!" (That's an obvious reference)
Dr Krankcase: "Ready, Set Goo!"
Chef Pepper Jack: "Time To Get Cookin'!"
Tae Kwon Crow: "Time To SLICE!"
Luminous: "Hit The Lights!"

Star Strike's catchphrase is actually "Shoot for the stars!"
Here are catchphrases for Villains that I think and hope will come back.

Mesmeralda: On with the show!
Dreamcatcher: As good as a dream!
Spellslamzer: The shadow in the light!
Chill Bill: Time to cool down!
Chef Pepper Jack: I will get it done well!
Chompy Mage: Biting into battle Chompy Puppet! (Chompy Puppet: Bite ahead!)

Baron Von Shellshock: Brawl to ze wall!

"I reign surpreme!" Is actually a line that plays in TT, but it's very rare because she'll usuaply say "Hope they got their money's worth". As of now, all villain catchphrases are from TT.

I know these guys aren't probably gonna be in Imaginators, but if Mesmerelda, Cluck, Moneybone, Spellslamzer and Strastosfear had catchphrases, what would they be?

Grave Clobber has so many quotes that could work.

"I will bury you!"
"Your digging an early grave!"
"Lets dig deep!"
"You are in grave danger!"

His catchphrase will probably be the last one though.

You can totally see my favorite villain catchphrase

Taking some from another topic since I'm kinda happy with the results. FINALLY found a Bad Juju quote that can be used; no luck with Tae Kwon Crow who has some incredibly generic/long lines.

Chompy Mage: "Chompy come, Chompy go!"
Grave Clobber: "That's a Wrap!"
Bad Juju: "Time for a spin!"("Hocus Pocus!" if Magic)
Dr. Krankcase: "Time for a professional opinion!"