So... ask it to dress them differently. You can just ask it to make whatever changes you want.

"An image of an archeologist adventurer who wears a hat and uses a bullwhip. He is wearing a top hat, a scarf, a knit jumper, and pink khaki pants. He is not wearing a bag" (https://sora.com/g/gen_01jqzkh4z2fqctzr9k1jsfnrhy)

Want to get rid of the pose? Add that the archeologist is "fun and joyous" to the prompt. (https://sora.com/g/gen_01jqzksmjgfppbv5p51hw0xrzn)

You have so much control, it is up to you to ask for something that is not a trope.