Franz Kefka

Franz is a member of the 104th Trainees Squad.

Franz first appears Ch.3 in walking through Trost District with Eren and Hannah. Eren refers to Hannah and Franz as a couple, which they both embarrassedly deny.

At some point following the breach of the Wall by the Colossal Titan, Franz is attacked by a Titan. He is bitten in half and dies.

Armin finds Hannah futilely attempting CPR on what remains of Franz's corpse. He tells her it's useless, and advises her to retreat to the Wall before it's too late.
First Appearance
Manga: Ch. 3 "The Night Of The Disbanding"
Anime: Ep. 3 "Shining Dimly in the Midst of Despair"

(Source: Attack on Titan Wiki)