Delius Swash Caps is part of a high quality comic book lettering typeface super-family. It has special uppercase letters for special uses, such as in titles and logos. It has companion families, Delius and Delius Unicase.

Delius is based on the handwriting that the artist María Delia Lozupone (whose pseudonym is Delius) uses when she letters her own comic books. The same tool that she uses to write (a big round marker) was used to define Delius's stroke and ductus.