Little dump of unspecific gothic literature headcanons, feel free to add your own:
- Adam's favourite animals are birds, especially sparrows and robins
- Victor has had asthma since childhood and has conducted multiple attempts for a more effective homemade treatment
- Jekyll and Hyde both like classical music. Former is a big fan of Mendelssohn and Bach whereas the latter prefers Liszt and Paganini
- Holmes' comfort piece on the violin is Caprice No. 24
- Jekyll is NOT a morning person. But his profession and status requires him to be one
- Sharikov has the flirting skills of a wet sock
- Also the fancy taxidiermied owl doorbell in Preobrazhensky's hall? He promptly destroyed it a second time once he was already human