ROB-LGS, short for ROB-legs is one of R.O.B.'s karts in Mario Kart DS. His others include the ROB-BLS and the Standard RB. The kart looks as if he has legs with roller skates. It is a very heavy kart, only lighter than Wario's Dragonfly and Bowser's Tyrant. Like most heavyweight characters it has high top speed and low acceleration, average handling (which is unique for heavyweights), but has the lowest drift in the game, and a high Items stat, and is the staff ghost for Desert Hills.
The ROB-LGS shares its speed with Bowser's Tyrant, its weight is equivalent to Donkey Kong's Rambi Rider, and it shares its handling with Mario's Shooting Star, Toad's 4-Wheel Cradle and Waluigi's Gold Mantis. It shares its items stat with all other characters' heavier karts.
This kart can be unlocked for Donkey Kong and Bowser if the player completes all cups in the 150cc Nitro or Retro Grand Prix, and can be unlocked for R.O.B. once he is unlocked. All characters can use this kart when all cups in the Mirror Mode have been completed.
Just like the ROB-BLS and R.O.B., the ROB-LGS has a different color palette in the Japanese and Korean version of Mario Kart DS, consisting of white and red instead of shades of light and dark gray.