Complex sentence: Diamondhead is a Petrosapien from the planet Petropia a silicon based alien, contrary to his name, and possesses a super dense molecular structure, making him invulnerable.
Split into simpler sentences: Diamondhead is a Petrosapien from the planet Petropia. He is a silicon based alien, contrary to his name, and possesses a super dense molecular structure, making him invulnerable.