Laser bots are enemies in Up Your Arsenal encountered in challenges in the Annihilation Nation on Station Q9. They are long-range counterparts of the bash bots that fire a blue laser from a cannon attached to their arms.
The basic red variants are seen in the challenges during the first visit to Annihilation Nation for "Win the Tyhrra-Guise". The dark purple variants, seen in the challenges after the second visit for "Meet with Courtney Gears", deal more damage with their cannons. In the gauntlet challenges, they will either fire in a fixed direction, often by spinning, or by aiming towards Ratchet, often perched on an elevated platform. In arena challenges, all of them attack by targeting Ratchet.
Laser bots pose a great threat in several challenges, when they target Ratchet. They are tough enemies that can sustain a decent amount of damage, and their lasers can deal significant damage. Like all arena enemies, they will often cluster up, and in some cases it is possible to get them to accidentally damage other enemies while aiming at Ratchet. In clusters, it is good to defeat them with area-of-effect weapons such as the Plasma Whip, Nitro Launcher, and Agents of Doom, or any sufficiently available weapon of your choosing.