Kelvin 506

 is a Scrapyard mech from Junkertown. It features a flamethrower. It is facing Bludger in an upcoming match.

Trivia

 * Kelvin 506 is a temperature that can be converted to 451 degrees Fahrenheit. This is a likely reference to the dystopian novel Fahrenheit 451.
 * Kelvin 506 can be seen in one of the defense spawns inside the Scrapyard.