Sentence:  Mr. Burns is similarly perfectly cast as a <WSD>heartless</WSD> capitalist willing to do anything for a quick buck, even if it means endangering the lives of those around him and Marge elegantly rounds out the main cast as a good, pure-hearted and overly indulgent woman who sees the big, good heart (literally and metaphorically) of a monstrous man-brute. 
Meaning of the word marked with <WSD> tags:  Without a heart; specifically, without feeling, emotion, or concern for others; uncaring.