In classical mythology, who is Proteus?

Proteus is characterized in classical mythology as a shape-shifting sea god, often associated with the aspect of elusive knowledge and prophecy. He is known for his ability to transform into various forms, which he does to avoid capture and to elude questions about the future. This unique ability to change shape symbolizes the fluidity of identity and the complexity of understanding truth or destiny.

The other choices represent figures from mythology but do not define Proteus accurately. A hero known for his strength would suggest a character like Hercules, while a titan who fought against the gods refers to figures such as Cronus. A mortal king doesn't align with Proteus’s divine origin and role as a deity of the sea. Thus, the description indicating that Proteus is a god of the sea who could change his shape aptly captures his essence in mythology.