Lum's father, the great Oni warlord named
Invader initiated the attack on Earth. An gigantic
figure of a man who is very menacing and
intimidating (although he doesn't seem to realize how
fearsome he is). He has a weight problem and tends to
raise his voice a lot. But sometimes he's kind of
goofy.
As for Lum's mother, she doesn't speak a word of
Japanese. The only thing you can hear from her is
a jibberish-like Oni language often depicted as
mah-jong tiles in the manga. Strangely enough
many people don't have any trouble understanding
her. She is much like an older version of Lum, she
even has the same powers of electricity and flight.
The two are such difficult and temperamental
people that they fight a lot. You soon start to see
where Lum's temper comes from.