Yea. Was that owl in the original?

Yes; only difference in portrayal really was the voice actor.

Timerangers' was a much older man, playing up the "wise old owl" stereotype.

So they get Owl from Winnie the Pooh, and we get a little mechanical Ninjor.

frax from timeranger too

Gluto or whatever (the fat fish guy) was Don Dondororo or whatever, the main Timeforce baddie as well.

rasik is usa main villan of timeforce
ryuuta is main villian of timeranger

Not sure who you mean by Ryuuta, but Don Dolnero (I got the name messed up) is the leader of the Londarz Crime Family in Timeranger,

http://powerrangers.wikia.com/wiki/Don_Dolnero

And he became the cowardly Gluto in Time Force.

I was watching In Space last night, and yes, another question popped in my head.

The Psycho Rangers. Or "The Best Idea Ever". Were they in Megaranger, or were they an American creation like Zedd?

I believe the psychos were adapted. Which makes sense considering how they were created and the nature of megarangers storyline-as In being VR and computer based. Correct me if I'm wrong

Yeah they're from Megaranger.