Plz check my paragraph once again.

Plz Please check my paragraph once again.

He has an red lightsaber as his evil weapon, that is red lightsaber.

Could also be combined with the above sentence.

"He has a flowing black cape and a red lightsaber."

As a side note, 'evil' is a strange adjective to use here. I understand why you chose it, but usually something is described as evil only if it can act of its own volition.

The car from Stephen King's novel 'Christine' could be described as evil, because the car is possessed and appears to have its own consciousness. Something which cannot make its own decisions generally cannot be evil as those things are usually tools used by evil people.

I guess another example could be the sword from Soul Calibur, since it appears to exert its influence on those that use it.

There are specific exceptions to this in fiction, such as possessed objects or locations that have such a history or atmosphere to them which would then make them evil.

I think an adjective that is more commonly used to describe weapons is "wicked" though if you only look at the dictionary that too appears to suffer from the same problems that "evil" does.

This is a more strict interpretation of 'evil' in terms of its meaning as "immoral/malevolent". It's also entirely possible that I don't know enough about Star Wars and that Darth Vader's weapon is indeed characterized as evil.

This is largely all nitpicking. Keep in mind that putting an adjective in that place like you did is perfectly fine.

The sword makes a horrible sound.

All of his costumes are a shiny black.

Today, his a famous line comes to my mind.

“I’m I am your father”.

He has wears a flowing black cape.

His weapon is an evil red lightsaber.

All of his outfits are shiny black.

Today his a famous line comes to my mind.