The graphic novel credits Ken Lopez as the letterer, and apparently he’s still getting work: https://mobile.twitter.com/the_batforce/status/1111794000632168449
I can’t find him on Twitter though, so if he’s on there it’s under a different name. Papercutz.com is no help either.
Edit: If you had asked me a year ago, I would have looked on ComicBookDB.com, but now that site has been shut down without an archive and all that is left to use is the far-inferior Comics.org
According to them, the lettering used in the Bionicle comics is a typeset font. Googling typeset fonts brought me to a Shutterstock list of seven of them, and by my eyes the closest one is Fjord typeface.
Another possibility is “Dupla Bold Italic Commercial Font.”