L is very intelligent, though his disheveled and languid appearance masks his great powers of deduction and many question his abilities upon viewing him. He is also shown to have a dry sense of humor, and he isn't above making sarcastic remarks to people. Although he tends to be polite L tends to second-guess everything he is presented with, and is extremely meticulous and analytical. He is good at deceiving his opponents, and is willing to take drastic measures to solve a case
Speaking style
Speaks in slow, precise sentences; ends with pointed questions; uses sardonic asides in parentheses; frequently pauses mid-thought.