You could inherit classes via Blueprints as you want. Open your BP and select ‘Class Settings’ from the menu above. You’ll see ‘Parent Class’ in details panel. Change it to ‘Character’ and recompile, then your BP class will inherit Character class. Character class instance has a CharacterMovementComponent as default sub component. Get a reference to CharacterMovementComponent of your BP character and call ‘SetMovementMode’ function. Setting it to ‘walking’ will make it work for you