I hope you're referring to the mechanis.
No. The "characters" were almost all awful to the point that one can't realistically refer to them as 'characters' at all. The dialogue was atrocious, there was no character development for just about anyone, and the entire population as a whole really just felt tacked as an afterthought. That's the largest problem with Fallout 3 (well, tied with the awful main quest line), the fact that the wasteland has next to no believable people that the protagonist can form any sort of connection with.
Back to the topic: New Vegas is a much better game unless you want to do nothing but explore. Hell, New Vegas is a better exploration game too if you have the PC version and tack some mods on. Better quests, better gameplay, better characters and dialogue, better.. well, everything.