Obi-Wan Kaboomi is one of the main protagonists in Angry Birds Star Wars and a playable character in Angry Birds Star Wars 2, he is the former friend of Anakin and Luke's old friend, he is killed by Lard Vader, he appeared as a ghost in the end of Death Star 2.
When Obi-Wan Kenobi was young, he has curly hair and a beard when he didn't wears a hood on his head, he has the powers to move an object to hit the Pork Side.
When Obi-Wan was old, he has a grey hair with grey beard, he later becomes Luke's mentor by teaching him with a blue lightsaber. He has still his powers despite being an elderly bird. He wears a hood on his head to hide his grey hair in the process.
Angry Birds Star Wars 2
Obi-Wan Kenobi is a old friend to Qui-Gon Jinn that recruit Anakin Skywalker, a young cardinal bird, after Qui-Gon Jinn died, Obi-Wan trains his friend Anakin into becoming a Jedi and succeeds, but soon, when his friend Anakin gets corrupted by Emperor Palpatine Pig into becoming Lard Vader, Obi-Wan brings baby Luke and baby Leia separated to their adoptive family respectively.
Angry Birds Star Wars
Obi-Wan, now an old bird takes under the name Ben Kenobi, he first rescued Luke from Sandpiggies in time to keep him safe, Obi-Wan then teaches Luke the lightsaber how to use it, Luke agrees and masters the lightsaber which impress C3-P0 Bird. In the first Death Star, Obi-Wan was killed by his friend Anakin (now Lard Vader) but Obi-Wan appears as a voice to encourage Luke, despite his death, Obi-Wan appears as a ghost to help Luke find Yoda, in the end of Death Star 2, Obi-Wan appears as a ghost along with his friend Anakin (now a ghost too) as well as Yoda after Darth Sidious Pig's defeat and death.