Grimlock ♥ Ultra Magnus

Someone I know is looking for representations of asexuality in TV shows.  (Movies and fictional books would be welcome as well, I believe.)  Yes, there is Voodoo in Sirens, but they find her problematic in that she's in it for the gore, and collects severed body parts. 

They believe that there should be better, more diverse, more stable presentations of asexuals, especially given how much her co-workers mock Voodoo.   (They call her sexuality both weird and boring, I believe.)

Anyway, if anyone knows about someone who defines themselves as asexual in a TV show, I'd appreciate the input so I can pass the suggestions along.   

Oh, yes, both this person and I agree that there may be people who are disturbed and asexual, but given the lack of representation in TV shows, it's disheartening to see the one and only so far portrayed this way.   

Thanks in advance!