From Forgotten Realms Wiki

Neutral good characters desire good without bias for or against order.

A neutral good character does good for goodness' sake, not because he is directed to by law or by whim. Such a character will obey the law, or break it when he sees that it will serve a greater good. He isn't bound strongly to a social system or order. His need to help others and reduce suffering may take precedence over all else.

A doctor who treats both sides in a fight and somebody who feeds the starving in a war zone are both examples of neutral good characters.

[edit] Characters

Some characters in the Forgotten Realms setting identified as Neutral Good include:

Alusair Obarskyr
Bruenor Battlehammer
Cadderly Bonaduce
Montolio Debrouchee
Myrmeen Lhal
Regis
Tessarin Alaurun

Non-canonical:
Khelgar Ironfist

(Khalid, Imoen and Minsc are canonical characters whose non-canonical versions have been classified as Neutral Good.)

[edit] See Also

Alignment
Lawful good	Neutral good	Chaotic good
Lawful neutral	(True) neutral	Chaotic neutral
Lawful evil	Neutral evil	Chaotic evil