ARANEA: While their romance is endlessly captiv8ting, leprechaun reproduction may 8e the most interesting su8ject of all. Particularly from a perspective of detailed anatomical study, which I will get to shortly. 8ut first it 8ears pointing out that while for humans reproductive relationships are exclusively heterosexual, and for trolls they are 8isexual, for leprechauns they-
Unfortunately for Aranea, Vriska interrupted her at a seemingly important bit of her exposition.
From the text above, one can conclude that leprechaun reproduction is neither heterosexual nor bisexual.
Possibility #1: Leprechaun reproduction is exclusively homosexual.
There don’t seem to be any female leprechauns shown in-canon. Also, Slick and the other members of the Midnight Crew refer to the members of the Felt (excluding Snowman, of course) as “he”.
Possibility #2: Leprechaun reproduction is asexual.
They could reproduce via mitotic division, but that’s kind of iffy. Since leprechauns are green, they could behave like plants (green color = chlorophyll), and some plants reproduce asexually.
Side note: Leprechauns may also have some special arrangement, like the trolls with their Mother Grub. Leprechauns resemble carapacians, so it’s possible that they also lack genitalia, and reproduce some other way.