"Sparrow" and "Sentinel" original characters commissioned by Johannes Erichsen.
"Sentinel" commissioned by Roysovitch for his Earth-27 project.
"Dedicated to Phil Cho and Tammie Westerman. Happy Birthday, from Roy and the Earth-27 Fan Community!"
Character belongs to DC Comics.
FB page for Earth-27: www.facebook.com/Earth27Project
GoFundMe campaign for Earth-27: www.gofundme.com/earth27project