Tom Happ has worked on many different "triple-A" games for both PC and consoles, such as Grey Goo, Tiger Woods, and NFL Street, to name a few. He began work on Axiom Verge as a part-time hobby in March 2010, and released it for PS4 on March 31st, 2015. Working alone, he is responsible for all art, code, music, and game design.
Dan Adelman is the guy who brought games like Cave Story, Shovel Knight, Retro City Rampage, the BIT.TRIP series, and World of Goo to Nintendo platforms. He worked there for 9 years, and his name is basically synonymous with Nintendo indies; he's facilitated the launch of hundreds of titles. Business development, marketing, negotiating - all those things that indies themselves tend to be weakest in - are his expertise.