the overall theme of the game is cartoony and child friendly. The characters never look menacing. When defeated, these characters vanish in a puff of smoke, splat or other effect that compliments the character type.
Most characters need to be hit multiple times before they vanish. Their reaction to the violence is unrealistic. They flinch or fall back, but there is no other reaction to the violence. Boss fights occur, but have the same violence as described above, just with a larger health pool. Some bosses can look a bit disturbing, but nothing that would elevate the rating to a 7 fear.