From what I remember of this show, it was a a scifi series where historical figures do their historical thing while interacting with other historical characters from other ages and locations in an off-the-wall manner, which isn’t too far from Horizon.
Zany might be the only way to play it: Julius Caesar, with his sidekicks Wiley Kit and Wiley Katt, blowing up feudal Japan with his submersible Gundam is something that would turn out zany if played straight.