Tsuyu Asui is an overly sincere frog-like girl in Class 1-A. Her Quirk is Frog, which gives her abilities such as enhanced swimming and jumping, sticking to and climbing up walls, and a long prehensile tongue. Tsuyu is a straightforward and aloof individual who always speaks bluntly from her mind and what she thinks about others. Tsuyu prefers to be called "Tsu", but only by people, she views as friends. She commonly refers to everyone with the honorific "-chan", save for teachers and other authority figures. Tsuyu is noticeably calm and collected, being able to stay levelheaded and focused even during the most stressful situations. Tsuyu has great judgment, can communicate her intentions easily and is rarely moved by emotion. However, even Tsuyu has limits when it comes to staying composed, having broken down in despair or heartbreak a few times. Her words may also come off as unintentionally harsh thanks to her blunt honesty, resulting in her feeling guilty and regretful when she speaks out against her friends. Her usual expression consists of a vacant stare, which makes reading her thoughts and emotions difficult for those around her while also creeping them out in the process. Tsuyu has a habit of tipping her finger against her mouth while speaking, pondering, or showing curiosity. She tends to say "ribbit", emulating a frog's croaking, at the end of her sentences, or as a replacement for many of her single word replies.