Pitter-Patter Christmas Eve
11. Ataru Genji Visits Heinkyo First appearance of Mendo, the rich noble; but it is not until episode 27 that he really does anything. Mendo tells a tale about ancient Japan featuring the normal cast in a slightly different alien invasion story. The aliens this time, all look like a bunch odd barbarians, except for a pretty girl and her young boy cousin.
Aired 23/12/1981EP 10 - Pitter-Patter Christmas Eve
Urusei Yatsura
It all begins when aliens invade and threaten to conquer the Earth! However, one member of the human race is chosen at random to duel the aliens and save the planet: Ataru Moroboshi, a lecherous slacker from Tomobiki High School who begrudgingly participates. All he has to do? Play a game of tag and catch Lum — the beautiful alien princess in a tiger-stripe bikini — by the horns. Unfortunately for Ataru, it’s not so simple, since Lum can fly and deliver electric shocks! Perseverance pays off, but once he catches her, Ataru experiences another shock: He’s now Lum’s betrothed “darling” and she isn’t going back to her home planet anytime soon!
(Source: Crunchyroll)