While Mello is certainly a genius and more intelligent than most people, the concept of being only the second most intelligent person in Wammy's House, behind Near, fuels the inferiority complex that defines Mello's character. Mello verges on immorality in his obsession with being the one to take down Kira and is willing to do "whatever it takes," Similar to L's fondness for sweets, Mello is seen eating only bars of chocolate, even when talking. He is seen licking the chocolate before eating it.