The Fetts were a family consisting of the bounty hunters Jango Fett and Boba Fett. Jango's homeworld was the Mandalorian planet Concord Dawn. Raised by a mentor during his time as a foundling after losing his parents, Jango fought in the Mandalorian Civil Wars.
In addition, one of the announcement teasers for The Mandalorian described Jango and his son Boba as Mandalorians, leaving their actual status as Mandalorians ambiguous. The discrepancy was resolved in "Chapter 14: The Tragedy" of The Mandalorian Season Two, which revealed that Fett was a Mandalorian foundling.
With his customized Mandalorian armor, deadly weaponry, Boba Fett was once regarded as one of the most fearsome and capable bounty hunters in the galaxy. An unaltered genetic clone of his father, bounty hunter Jango Fett, Boba learned combat and martial skills from a young age.
Jango hated the Jedi for what they took from him. Perhaps he even hated him for having a home to return to after helping the New Mandalorians take his. Whatever the reason, he hated the Jedi enough to become essential to Palpatine's elaborate plans of genocide.
In his time as a Bounty Hunter, Jango is only known to have killed one Jedi, Coleman Trebor. However, he did kill six Jedi with his bare hands during the Battle of Galidraan, when he was still a soldier.
Is Grogu Yoda? According to the events of "The Mandalorian" so far, Grogu and Yoda are not the same character. They are simply from the same species. The name of this species has never been revealed since "Star Wars" creator George Lucas wanted to give Yoda a sense of mystery.
Fett originally bore his armor as a Mandalorian warrior during the Mandalorian Civil Wars, the conflict during which he was given the armor in the first place. During his storied career as a bounty hunter, Jango used his armor to great effect, collecting bounties for various clients.
Tarre Vizsla was a Force-sensitive human male who, was inducted into the Jedi Order around 1050 BBY, becoming the first Mandalorian to do so. Tarre eventually became a famous Jedi Knight.
Characters like Din Djarin, Boba Fett, Bo-Katan Kryze, and Paz Vizsla all hold the simple rank of Mandalorian, a member of the Children of the Watch responsible for upholding the ways of the Creed - at least in Din, Paz, and now Bo's case. Mandalorians uphold the Way by following the rules of the Creed.
In the Star Wars prequels, Jango removes his helmet more or less whenever he's not fighting, happy for Obi-Wan, the people of Kamino, Count Dooku and others to see his (or, indeed, Temuera Morrison's) face.
While seemingly killed in Return of the Jedi after falling into a sarlacc, he has since appeared in Star Wars media set after the film, confirming his survival within the new canon, portrayed by Temuera Morrison.
Given the rarity of his species in the galaxy, along with the fact that the only other two known members of Grogu's species were both living in the Temple when he was born, it seems likely that Grogu is the child of Yoda and Yaddle and was born to help preserve their rare species.
Yoda held the title of Grand Master of the Jedi Order since the days of the High Republic Era. At some point, Yoda took on a human named Kantam Sy as his Padawan. The two were stationed at the Jedi Temple on the planet Endovar.
Legend had it that Yoda—a Jedi who became Grand Master—was trained by N'Kata Del Gormo. A Force-sensitive Hysalrian, N'Kata Del Gormo was trained in the ways of the Force and achieved the rank of Master within the Jedi Order.
It was believed that Grogu would eventually become a victim of Kylo Ren's destruction of Luke's Jedi Order. However, The Book of Boba Fett revealed that Grogu chose to follow the Way of the Mandalorian rather than become a Jedi, sparing him from Kylo Ren's wrath.
Windu counters that Sidious is too dangerous to be kept alive and prepares to summarily execute him. However, Anakin intervenes on Sidious' behalf, disarming Windu by severing his right hand. Sidious kills Windu with a blast of Force lightning, sending him falling to his death out of his office's window.
Boba Fett isn't dead in the Book of Boba Fett because he's not just the main protagonist of the story but was also able to climb out of the Sarlacc Pit, thus, surviving his 'death'.
Boba Fett is shown to have accumulated a sizable collection of lightsabers from Jedi he defeated and he is explicitly shown to have defeated and captured Jedi Knight Rachi Sitra in the Galactic Hunters expansion of the Star Wars Galaxies Trading Card Game.
