Aired: 1983-94 Syndicated
DAD: Duncan (Alan Oppenheimer) / Single 
DAD’S JOB: Man-At-Arms for Castle Grayskull
KIDS: Teela (Linda Gary) (20-ish)
WHERE’S MOM?: Nearby, in disguise
STAND-IN "MOM": Sorceress (arguable), or possibly Queen Marlena / Local Royalty
Confession: I was smitten with Teela. Apparently, so were many other guys, because there were no Teela action figures on the shelves when this show aired.
Here’s the scoop – – Teela was the daughter of the sorceress Teelina, and was given to Duncan by the sorceress. Duncan’s job (as Man-at-Arms) was basically to be the official bouncer of Castle Grayskull. Teela grew up to be the bodyguard of Prince Adam of Grayskull. Adam, of course, was the Clark Kent of He-Man, so he didn’t really need to HAVE a bodyguard. At least not one with a metal bodysuit.
A tip of the Andy Griffith Memorial Sheriff’s Hat to John Doyle for the heads-up on He-Man. Thanks, John!