Need help!

One of my friends saw an anime but he doesn't know what it's called. Can you guys help out? I'll post the IM where he describes it.

RANMAsaotome1822: theres an anime....its fairly old
SnowFairyTifa: mmhmm
SnowFairyTifa: What's it called?
RANMAsaotome1822: its futuristic-space like
RANMAsaotome1822: if i knew
SnowFairyTifa: Metropolis?
RANMAsaotome1822: i wouldnt ask a question.
RANMAsaotome1822: NO!
RANMAsaotome1822: ><
RANMAsaotome1822: i dun think.
SnowFairyTifa: uhm ok x_x
SnowFairyTifa: hmm
RANMAsaotome1822: listen
SnowFairyTifa: ok...
RANMAsaotome1822: theres a few main characters
RANMAsaotome1822: ones name Ryu or Ryo or somethin
SnowFairyTifa: Ryu...?
SnowFairyTifa: hmm
RANMAsaotome1822: and he has a girlfriend
RANMAsaotome1822: and
RANMAsaotome1822: the main part i remember
RANMAsaotome1822: is they have a spaceship named mother
SnowFairyTifa: Hmmm...I haven't heard of it, but I'll ask my friends
RANMAsaotome1822: and theres this cool cat dude thats annoying who can build annoying robots that look like him.
RANMAsaotome1822: IT WAS SO COOL!
RANMAsaotome1822: and ic ant remember what its called!