He recognized the .......... figure, sitting there alone in the rain.

Disconsolate means very sad, lonely, and without hope or comfort. A figure sitting alone in the rain would appear desolate and sorrowful. Dismal means gloomy, disjointed means disconnected, discreet means subtle or unnoticeable, and disgruntled means annoyed or dissatisfied - none capture the lonely sadness as well as disconsolate.