Drawn by me
Heatblast’s mutation affects his body’s ability to maintain stability against its own extreme temperature. This causes his body to lose consistency and become something similar to molten rock. While this new form prevents him from manipulating fire as easily as before, it does allow Heatblast to fire off pieces of his own body at enemies like volcanic bombs. Though doing this will cause him to lose mass and size, Heatblast can regain his mass and actually grow in size melting down and absorbing sturdy enough materials into his body.