I thought it would be fun to list this as a challenge thread. It must include the following and can be as silly as you like.
Lines from each of the Thundercats.
Same for either Slythe or Mumm-Ra.
End with a roar.
Are you up for a challenge? 
An example would be helpful. I’m not quite following you.
Maybe this will help get the ball rolling.
Announcer: “The wait is over.”
Tygra: “Never . . rush . . genius.”
Announcer: “The new Thundercats are out on DVD”
(Wiley Kat and Kit cheering)
Announcer: “With special behind the scenes features”
Cheetara: “I knew there was something special.”
Announcer: “If you miss out on this.”
Mumm-Ra: “You will break.”
Announcer: “So get your copy on DVD or Blue-Ray before they’re gone.”
Slythe: “Yesssss”
Announcer: “At the retailer near you.”
Lion-O: “THUNDERCATS HOOOOO!!!”
Okay I wasn’t able to get lines from all the Thundercats, but this is a rough idea of what I was aiming for.
Have fun everyone. 
That’s pretty good. I’d have to rewatch the episodes to get more quotes than I currently know. 
If it would help, you’re welcome to use the Announcer’s lines Code.
Update: It looks like the DVD will be out by Oct. 18 or at least available for pre-order from Amazon. Is there no one who wishes to try this challenge?