I am aware that there is a lack of highlight with warm hues from the flames on the surrounding objects.
This is off to a good start

The background gives a great feeling of chaos and destruction.
IMO:
The STYLE of shading on the main character is the first thing that needs attention.
Would love to edit if I can find the time but need more info from you first.
Please show some reference images of characters and props, this makes it easier to help because I haven't seen all the recent movies and don't recognise the character.
Re the fire, its not just the colours but also its place in the scene is distracting and feels off to me.
It could be an idea to flip smoke and fire horizontally and find a more balanced place in the scene.
EDIT: Also please tell us if u want this to give the impression of game art (eg character looks like a sprite), a static art piece (character is painted into the scene), or somewhere in between.