The 7D - Season 1 - Eps 37: The Very Important Thingy
Queen Delightful has Doc invent a Thingy so that her upcoming announcement can be heard even in the next kingdom over. While Doc tries to find someplace quiet to concentrate on the plans for the Thingy which leads to him working on the plans in the Tranquil Desert, the other 7D turn to Lord Starchbottom to teach them how to be quiet. When Doc's Thingy is finally created, Queen Delightful's invention impresses the ruler of the next kingdom over to have a Thingy made to respond to Queen Delightful's announcements.
About The 7D

Title: The 7D
First Air Date: 2014-07-07
Last Air Date: 2016-11-05
Status: Ended
Rating: 5.806/10 (from 18 votes)
Language: EN
Seasons: 2
Total Episodes: 88
Network: Disney XD
Genres: Animation, Kids, Comedy
Production Companies: Disney Television Animation
Synopsis
In the whimsical world of Jollywood a Queen Delightful relies on the 7D, a group of seven dwarves, to keep the kingdom in order. Standing in their way are two laughably evil villains, Grim and Hildy Gloom, who plot to take over the kingdom by stealing the magical jewels in the 7D's mine. With seven very distinct personalities, the 7D always manage to save the day and send Grim and Hildy running back to their evil lair to try another day.
Cast

Bill Farmer
Doc (voice)

Dee Bradley Baker
Dopey (voice)

Billy West
Bashful (voice)

Maurice LaMarche
Grumpy (voice)

Kevin Michael Richardson
Happy (voice)

Scott Menville
Sneezy (voice)

Stephen Stanton
Sleepy (voice)

Jess Harnell
Grim Gloom (voice)

Kelly Osbourne
Hildy Gloom (voice)

Leigh-Allyn Baker
Queen Delightful (voice)