He has no "real" super-powers, although in my interpretation of his abilities I did give him Luck and Heightened Defense based upon his Luck roll. He relies on his luck, his wits, his two fists and his fantastic Rocket-Powered Plane to fight against the Japanese.
In issue #1 he saves a beggar boy from being murdered by Japanese soldiers. The boy becomes the Turtle's sidekick, calling himself "Burma Boy."
The Turtle has a hidden mountain lair (see pic below), but in the five issues total that were created, not much is shown.
Hidden Mountain Lair
Green Turtle MP Sheet
Green Turtle MP Vehicle Sheet
Burma Boy MP Sheet
Cover of Blazing Comics #2
Green Turtle and Burma Boy are considered to be in the Public Domain. The artwork shown is from the original comic run. The write-ups are by me, BK Adams.