Errant uses Blambot Casual!
I tested a bunch of fonts for Errant before settling on this one. A lot of my old comics were lettered in Creative Block:
But the very heavy, angular style didn't really fit with how Errant looks, because I'd spent several years making more cartoony work in between these and my style had become less stark and a bit softer, plus it's a colour comic, so naturally less heavy than my black and white work
I also personally felt like "Marvel style" lettering with both upper and lowercase was both more suited to my casual, rambly writing style and gave me more flexibility to go into all caps if I needed to. It does kind of surprise me that most manga are lettered DC style in all-caps, even ones with very long passages of text that'd be nicer to read in sentence-case.
My partner Shaz is a designer and fussed a lot over stuff like the font size and line spacing to make Errant as mobile-friendly as possible. It's for the best in terms of building an audience on Tapas, but did mean that the dialogue in the final comic tends to end up stripped down a lot from the script because the lettering is so much bigger than I'm used to.
Funnily I did try making a font based on my handwriting, but my handwriting is a bit too soft and cute, and I tend to reserve it for work I do on things like making tech things less intimidating, like this:
It didn't really suit an action comic with bold art, so when you see my handwriting in Errant, it's nearly always used for comedic purposes. 
