Hmmm off the top of my head, I'd say Makise, Okabe and Hashida from Steins;Gate. Also, I'd have to include Koko and Dr. Miami (for different reasons) from Jormungand.
Buying resources out of their own pockets, spending energy and effort, with almost no return so that everyone can enjoy the cultural and entertainment products of developed countries at almost zero cost walking in the dark to serve the light, they are real heroes