A graceful combat style, it became a specialist form for duels with Sith opponents. Form II relied on careful and controlled strikes instead of power and strength. Count
Grand Master Yoda appeared to have also used the form, as he had once taught Dooku the Makashi salute. As Darth Tyranus, Dooku trained both Asajj Ventress and Grievous in Form II.
Obi-Wan Kenobi was highly skilled in Form III. Over the course of the Clone Wars, Kenobi continued to develop his skills.
Throughout his career as a Jedi knight, Obi-Wan used Form III Soresu in lightsaber combat, which was originally created as a counter to the dueling intricacies of Form II's fencing style and focused on minimizing movements while optimizing defense.
While he is not Force-sensitive, Grievous has been trained in all forms of lightsaber combat by Count Dooku. Each of his mechanical arms can separate in half, allowing him to wield four lightsabers at once to overwhelm his enemies.
At first, Rey primarily fights with a lightsaber the same way she would have with her quarterstaff. However, after studying Luke's Jedi scripture and training with Leia, Rey probably uses Form VI: Niman, a jack-of-all-trades lightsaber form that combines different aspects of Forms I through V.
Darth Sidious was also one of the greatest and most skilled Sith swordmasters, as he has mastered all the seven lightsaber forms, all their stances and techniques and is capable of using each form equally effective ambidextrously.
Obi-Wan Kenobi adopts a Form I stance. Form I was the most ancient lightsaber form still in use at the time of the Jedi's fall. In fact, it was the first form created, codifying standard lightsaber techniques in the early centuries of the Jedi Order.
Through the Force, Yoda was considered to have mastered Form IV to its highest level. He used it in almost all of his battles, and his mastery of the style caused others to describe him as virtually unstoppable against most opponents, including Separatist battle droids, despite his small size and advanced age.
Practitioners of Form V included Jedi Masters Aayla Secura, Adi Gallia, Plo Koon and Luke Skywalker, Jedi Knights Anakin Skywalker and Ulic Qel-Droma, and Dark Lord of the Sith Darth Bane.
Form VI, also known as Niman, was the sixth form of lightsaber combat used by members of the Jedi Order.
Form VII, known by its two primary disciplines of Juyo and Vaapad; and also known as The Ferocity Form, was the seventh form of lightsaber combat. It was considered the most aggressive and unpredictable form.
A Form I specialist who lived during the Clone Wars was Kit Fisto, who was credited as one of the best duelists in the Jedi Order. His mastery of the form was advanced, and he applied it in many battles and duels, always with his trademark smile.
7 Form VII: Juyo (or Vaapad)
Consequently, Form VII was outright banned by the Jedi for a long time. However, Jedi Master Mace Windu took it upon himself to refine Juyo into an offshoot known as Vaapad: the perfection of Form VII. Windu developed Vaapad to control his inner darkness and channel it into worthy goals.
Form IV, also known as Ataru (pronounced uh-TAR-oo) or The Aggression Form, was the fourth form of lightsaber combat invented by the Jedi Order. An acrobatic combat style, Ataru could be used to defend against incoming projectiles but was best suited for open spaces and attacking.
The Skywalker lightsaber, also known at various times as Anakin's, Luke's, and Rey's lightsaber, was a blue-bladed Jedi lightsaber constructed by Anakin Skywalker—Jedi Knight and prophesied Chosen One of the Force—during the final years of the Republic Era.
Form VIII: Kendosu, or the Way of the Varactyl, was a new swordplay style developed during the Great Galactic War by Jedi Knight Scott Borek.
Billaba became Windu's Padawan and trained under the Jedi Master in the ways of the Force. During her training, Windu allowed her to study Form VII variant known as Vaapad. She eventually became a Jedi Knight, renowned for her skills with a lightsaber and favored Form III when teaching other Jedi.
Kylo Ren's lightsaber form was something of a hybrid, which blended three styles together: Djem So, Juyo, and Niman. Djem So used an irregular reverse grip and was meant for practitioners who loved fighting with a more offensive edge - a perfect fit for Ren.
Obi-Wan Kenobi used Form III.
Leia Organa's lightsaber was a blue-bladed lightsaber powered by a kyber crystal in the core of the hilt. It was silver and copper in color and featured mother-of-pearl inlays. Organa's weapon was considered a work of art, having an elegant symmetry with silver and gold hues that evoke to her upbringing on Alderaan.
Anakin Skywalker carried this blue-bladed Jedi weapon throughout the Clone Wars. After dueling his former apprentice on Mustafar, Obi-Wan Kenobi took Anakin's lightsaber and kept it on Tatooine for nearly two decades.
There are 7 forms of lightsaber combat, but Soreso, Shein, and Vaapad are the most effective. Soreso, Vaapad, Shein, are the most effective forms because they are all strategic and have their strengths and weaknesses. But the thing they all have in is that you must fully commit to the form.