What does the robot cat head stand for?

The robot cat head means that this person likes Doraemon, an anime character.

Doraemon is a Japanese cartoon, which tells the adventure story of Doraemon, the robot cat, and Nobita, the protagonist. Doraemon has a wide audience all over the world with its lovely, humorous and warm plot. Choosing to use the robot cat's head shows that you like simplicity, childlike innocence and recognize the value of friendship and endurance. By taking the robot cat as their incarnation, people show their love and recognition for cartoon images and their positive values, hoping to convey positive feelings such as loyalty, friendship and optimism to other users.