Check out the super cool Easter Egg in the Guardians of the Galaxy Blu-Ray.
A user on reddit posted the following image revealing none other than Beta Ray Bill and Starhawk as part of an 8-Bit Guardians of the Galaxy video game (the James Gunn featurette below contains 8-bit footage as well).
We also see Groot and Gamor.
It was previously speculated that Beta Ray Bill was a part of the Collector's Museum, but director James Gunn recently said it wasn't the case.
Guardians of the Galaxy is currently available via digital download; the Blu-Ray becomes available December 9th.