what form does anakin use

Anakin Skywalker, later known as Darth Vader, primarily used Form V, also known as Djem So, as his lightsaber form. This form is associated with power, aggression, and counter-strikes, and it seeks to overwhelm opponents with powerful and heavy-handed strikes. Anakin employed the Shien variant of Form V, which was developed as a more aggressive variant of Form III, sacrificing some protection for more power and focusing on overpowering opponents. After becoming Darth Vader, he continued to use Form V, but he also mastered two other lightsaber disciplines due to the limitations imposed by his mechanical suit, which severely restricted his physical movements. This adaptation allowed him to continue his formidable lightsaber skills despite the physical constraints imposed by his suit.