Information on a Character: Details about a character named Themis, perhaps from a comic book, video game, or anime series, described with attributes like "big boobed goth" and associated with something called "Thunder Fin"?

Conclusion

: Refers to the physical type and stylistic aesthetic (Gothic subculture) of the performer in the video. "Themis Thunder" : The primary stage name of the performer.

: Themis Thunder is a Hungarian adult film actress and model who began her career in late 2015. Physical Characteristics

Fashion: Sharp, structured silhouettes, latex materials, and "fin-like" hair styling or accessories.