Sonny

"Sonny" is the name given by Hanji Zoe to a 4m Titan which is captured after the reconquest of Trost District.

Abilities
Sonny displays typical traits for a Titan of his class. He displays no intelligence. He does not appear to feel pain, ignoring a spear driven into his heart in favor of attempting to eat Hanji. He loses activity after an hour of sunlight deprivation.

Hanji describes his personality as "introverted", but this may just be projection on Hanji's part.

Story
Sonny first appears when the gate of Trost District was broken by the Colossal Titan, numerous Titans invaded the district. However, when the breach was plugged by Eren Jaeger, human forces were able to retake the district. Most of the Titans who had entered are killed, but two are taken alive; Hanji nicknames them "Sonny" and "Bean". Hanji performs a number of experiments on them, testing their response to attempts at communication, injury, and sunlight deprivation. Hanji has further tests planned; however, during the night, Sonny and Bean are killed by Annie Leonhardt.