Ever since you were born he loved you like crazy and...when your mother died he became over protective of you and always made sure no one hurt you, since he was retired from the Survey corps he was pretty military but he was definitly loving and caring, since he was "Humanitys Strongest" everyone cowared away as soon as they heard your last name....Ackerman....every time some one heard it they knew you were his kid and there respect for you boosted, you were known as "The kid of humanity's Strongest" not really catchy but everyone knew you and wanted to be your friend

Levi: Hey kiddo mind if I talk to you real quick?

He was sharpening his blades in the living room