[@FantasyChic] Faeries and werewolves can produce children with Shadowhunters, and the resulting offspring will essentially be a Shadowhunter, but will possess certain traits of the Downworlder parent's race, such as pointed ears for faeries or more prominent teeth for werewolves; a faerie's child with a human will be half-faerie, whilst a werewolf's child with either human or werewolf may or may not be a lycanthrope themselves, but even if not will possess a dormant version of the lycanthrope virus that grants them enhanced strength and speed and the option to pass on the virus, but not to become wolves themselves. Warlocks are infertile due to being a hybrid of human and demon- and that may have something to do with the natural demonic tendency towards destruction rather than creation, but that's just me theorising over here- and vampires can't pass on their genes due to being dead, though they can "breed" in a sense by turning other humans or Shadowhunters. Some exceptions to normal breeding rules do exist, however, under special circumstances, as discussed in the interest check, and if you wish to go over something along those lines feel free to PM the GMs. [hider=Spoiler Warning] Most notable is the case of Tessa Gray, child of a Shadowhunter who never acquired any runes and an Eidolon demon, thus technically being a warlock, but with the ability to have children as well as a unique ability to Change into anyone so long as she's holding an item that has acquired an imprint of sorts from that individual, like recalling somebody else's memory. This is even more notable because the child of a demon and a Shadowhunter is usually stillborn, evidently due to the additional angelic influence of the runes, but even then it's implied Tessa survived as a result of a particular protection on her throughout pregnancy. [/hider]