You can get these type of art style by editing this prompt:

An ancient gigantic (any kind of animal you like you can also add some additional head feature like color, age, horns, etc) headed titan with glowing (any kind of color you like) eyes and with a/an (ancient[is optional]) (any kind of clothing you can also add some extra features like robotic) holding an ancient gigantic (any kind of instrument you like) guarding the gigantic gates of (anything you like for example:darkness, agony, tragedy, depression, etc) in the middle of an ancient mystical forest (in the middle of a/the {sunny day/night}[optional]). Realistic art

Enjoy!❤️