Robo Beam (ロボビーム, Robobīmu) is R.O.B.'s Neutral Special Move. The attack is a small pink laser that does a small amount of damage (normally 5%) and has decent stun capabilities. The shots can be angled up or down and reflect off of walls and floors. It should also be noted that this attack does not stop when it hits an opponent, allowing the player to hit multiple foes. R.O.B. must wait 1 second for the laser to recharge, or R.O.B. will shoot a weak, short-range laser. When the laser is charged, the red light on R.O.B.'s head will begin to flash. Kirby also has this property when he copies R.O.B. There are actually two levels of charge; if the beam is left alone for 20 seconds, it will become the Super Robo Beam. Super Robo Beam is much stronger and thicker and has increased range (enough to travel all the way across any stage), though it is significantly slower than a normal Robo Beam.
If used at a very close range, the beam will do higher, fire type damage, starting at 9%.
While the move is obviously unique to Brawl, the flashing red light on R.O.B.'s head when the Robo Beam is charged is a throwback to when the red light flashed to indicate that R.O.B. was ready for use with the NES.