No there is no mech editor whatsoever in UK, maybe in the future but that's just a dream atm. As for customizing the mecha in the only thing you can do atm is add power pack items which boost your mechs status, and have different coloured skins, but that's about as far as it goes for customization.
But, its not apart of the game. You can interchange the .X files inside the Robo folder. Example is changing the sword of the XP by transfering over another weapon like the Vista's sword by copy and pasting vistas "sword" over to the XP robo folder. Although I wouldn't recommend it if you don't know what your doing. Also its only a cosmetic thing and doesn't change the status of the mech at all.
Last edited by Rockfire on May 18th, 2009, 5:04 pm, edited 1 time in total.
You earn the Items via the Arcade mode, depending what you kill depends on what drops from the enemy and how good it is. As for using items just go into hanger mode, it should be easy to work from there.