Robot

When merging, releases 2 rockets, aimed at random opponent's units, stunning them on impact for 5 seconds. Doesn't work in Co-Op or Plunder

When merging, releases 2 rockets, each of which deals 600 damage to a random monster and all nearby enemies, in addition to slowing them down by 20%

The Robot appears with a light bulb, if there is no other such Robot. When merging, causes all Robots to overload, causing them to fire 1 more rocket from effects triggered for 10 seconds

The Robot appears with a light bulb, if there is no other such Robot. When merging, gives 150 mana for each merge rank and charges up other Robots, increasing their attack speed by 20% for 10 seconds

Increases damage by 1% for each merge. Maximum number of merges is 60

Instead of area damage, after 5 merges the Robot gains a 10% chance of firing a rocket that deals 600 damage. For every 10 merges, increases Robot's damage by 100% and rocket damage by 300%. Increases the maximum number of merges to 60

Upon reaching 30 merges, the Robot gains a 10% chance of unleashing an energy beam during a normal attack, additionally dealing 500% damage to common monsters and 1000% to bosses and mini bosses. Also causes a Robot with a light bulb to give a light bulb to another Robot every 80 seconds