Matinee for character?

Big noob question here,i want to attach my matinee to a character that i am using,his matinee animation to rotate him 90deegres,after completing simple move to, he dissapears or start this matinee at his starting position,overall can i use in general matinee as animation for my characters when they die?My characters are only static cubes who are static meshes,no skeletons on them.

Matinee, as far as I know, was intended for putting together many animatable components for a cutscene or something similar. Matinee is also quite old, and you should consider using Level Sequencer, the new tool for making cutscenes and other.
You could consider using skeletal meshes, as this will allow you to create animations externally. This is the generally preferred way of animating characters. Other than that, you could use a timeline to interpolate between 0 and 90 and use Add Relative Rotation to animate the cube.
Also, FYI you can import a static mesh (not rigged) into Unreal Engine as a skeletal mesh, and it will automatically generate bones based on the hierarchy of the mesh’s components. This would allow you to do skeletal mesh specific things if you wanted to.