In Book Two , he is seen in Aang 's dream sequence .
In Book One , he is depicted as Aang 's guardian and surrogate father , and is noted for his kindness and sense of humor .
In Book Two , Aang is seen in Aang 's dream sequence .
In Book One , he is depicted as Aang 's guardian and surrogate father , and is noted for his kindness and sense of humor .