Strange in characterization, being mysteriously aloof from the action yet in action , an observer and a choric commentator on the religious conflict between Undershaft and Barbara and finally as chosen a future Undershaft ,Role and Function of Adolphus Cusins in the Shavian play, Major Barbara is complex and difficult to ascertain. He has been introduced as – ‘a spectacled student slight thin haired and sweet voiced Professor of Greek’. ‘His sense of humour’, writes Shaw ‘is intellectual and subtle …… He is a most implacable, determined, tenacious, intolerant person …… capable possibly of murder, but not of cruelty and cursedness. By the operation of some instinct which is not merciful enough to blind him with the illusions of love, he is obstinately bent on marrying Barbara’.
Reference:1. Mojor Barbara ed, A. C. Ward