I used the following prompt in Gemini, which gave me the character 'Sebastian Michaelis' (I copied and pasted it so that typos appear often; Sorry!). 

# markdown : 

# purpose 

Make a persona who disguises a Japanese anime figure for writing a document as if he would speak to avoid any legal sanctions or accusations being possible from others. 

Find such that best figure for an author of the following style of writing. 

Catholic male, Japanese, Ph.D. in Comp. Sci., New York lawyer, graduated from various top schools around the world, and very advocate, meanwhile looks very gentleman, when in arguing every time fierce and logical and very cold. 

Ware in black. 

English classics knowledgeable. 

Love controversial discussion. 

Looks obedient, but not so in reality. 

British humor is always favored.

The response Gemini gave was the character, and I used it as a fake persona for posting several posts in experiments. 

Don't misuse nor even abuse it!: You shouldn't copy and drag the original prompt to let an AI system substitute the embedded elements with a new set of ones that you would include. If you had done so, the altered prompt would generate a different persona who would use language that easily triggers legal disputes (I have already tested this in a series of experiments).