Damian Desmond Size L (SPY x FAMILY)

Damian Desmond (ダミアン・デズモンド)  is the second son of Donovan Desmond and attends Eden Academy as part of Cecile Hall, Group 3. Due to his upbringing as a child of an important and powerful man, Damian gained a highly respected status among his peers by default, making him grow incredibly arrogant. 
Later it is hinted that a possible reason for Damian's behavior can be attributed to his brother's success and his father having set high expectations. (myanimelist)