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- “The day you take me on, Hero, is the day you burn.”
Meltdown has the same claws as 8919 Mantax, 20012 Click, and Von Nebula's facial pincers, but with more armour. He has a tentacle/acid as one of his weapons. His legs are made from Ben 10 thighs, Toa Metru legs, Ackar and Mata Nui's foot armour and Shadow Matoran feet. The symbols on his tanks are a radioactive symbol. Some pictures also show the tubes in solid lime green, others in transparent lime green. They are actually transparent lime green.
A very intelligent, hulking, psychopathic cyclops who delighted in firing his toxic waste blasts and watching his enemies wither, Meltdown was Von Nebula’s most destructive servant, whose weapons included a radioactive sludge shooter and a toxic whip. He was totally mentally deranged. His quote was "The day you take me on, hero, is the day you burn.". Meltdown was originally a science buff at a radiation research facility. However he became obsessed with his work, and prolonged exposure to the chemicals made him malfunction and go insane. He fashioned himself a pair of toxic weapons, and had since been on the rampage. He was later part of an attack on New Stellac City. After it failed, he and the rest of Von Nebula's gang were captured and arrested.
- On Meltdown's box it shows his toxic waste canisters facing up but in the set they point sideways.
- Meltdown is the only 2010 villain not to have a Glatorian head.