Where is the stable master on avatar the last airbender?

Answer 1

If you mean his location, it's at the far south end of the city. If you mean after you gather the 5 hard leather strips, he's where you very first began the level, or the middle of the town square, just north of the huge fountain

Answer 2

If he's not in the stables, then he'll be with Appa at the same exact spot where you began the level. The map in the inventory and the green arrows on the map in the upper-left corner of the screen will lead you there