Yeah, Dobrynya Nikitich i Zmey Gorynych (Добрыня Никитич и Змей Горыныч) is the name. The full version is on YouTube in several pieces, but no subtitles. Even without subs though, it's pretty insane. The fight with Baba Yaga's chicken-footed cabin (no that's not a metaphor - the thing literally has giant chicken legs and runs around kicking the shit out of people) at the end is almost loonier then this, but I can't find a clip of just that.

Baba Yaga is a Russian staple. It would be kind of weird if her house didn't walk around.

No, they're wearing too many clothes and the fat one would never make the cut.

It's nice to know that Mua'dib allows the spice to flow into ancient Russia.

'Cause it's PARTY TIME!

I beg to differ - the funny fat one always wears a warm color, to make their fatness stand out more.