In the Ninjago bloopers (see above) Garmadon is in a Garmadon costume to get into character. If you look closely in DotD, when Dareth is being chased by the stone army, in the back row there is a person with that same costume. Look at 0:57 below.

https://youtu.be/5gvgj0jcJ7k

The guy is also there in the front at 0:05, one near the back at 0:14, one on the left of Kozu at 0:27, two at 0:38 and 0:45, one at 0:49, one at 0:52, one at 0:55, two at 0:03. Somehow, Dareth only mentioned a funny clown, an alien, and a astronaut, and stone army (kinda).