When a designer decides to design a superhero alphabet he has to make difficult decisions as to which superhero (or villain) to illustrate or not illustrate.
In the "Superbet" does "S" stand for Spider-Man or Superman? Superman lost this design battle.
Do you give "W" to Wonder Woman or Wolverine? Diana design-wise never had a chance. Apparently Logan wears the flashier colors.
For "R" I would have certainly gone for Robin over the Riddler any day.
Giving "T" to Two Face and not to Thor is definitely a most unfortunate oversight. Being unicolor (and mostly red where you lose out to the Flash) apparently makes you a loser in a color palette battle.
Simon Koay, who designed these "Superbets" is a Hong Kong born digital designer currently living and working in Australia.
You can find his website here.
All of the prints featured here are for sale at Koay's Society6 store.