This character is Cast, Knight's little brother and also another one of the HS childs.

Name: Cast the Echidna
HS: #4
Title: The Burning Meteor

More about him later, this is a drawing of him using one of his most powerful attacks.

Name: Maximum Heat Blaster
Rank: S
How it works: Cast reaches his max level of thermal energy and sends it outwards in blast form, this move heats up a target's molecules to speed up and scatter causing the target to disintegrate. Move is best used in air where Cast can absorb heat energy from the sun.
Requirements: Cast must be in his "Max Heat" drive.