He works under Leo as a doctor,, he can preform easy tasks just as those at a clinic, and he’s experienced in sewing up wounds which comes in handy being in his particular line of work- but one of his most important attributes he serves to Leo is his ability to concoct various poisons (as well as their antidotes) Which makes it excellent to have him around when various methods of torture are induced. For example, he’s made a poison that causes the victim to go into cardiac arrest within 15 minutes of exposure- and the only way to stop it is a special concoction of medicine- as well as a defibrillator- But yeah Sinister dude