Yes there is a Gandalf the Wizard in the Lord of the Rings.
In the movie, Gandalf and Saruman engaged in a battle of will and magic, in which Saruman cast down Gandalf and sent him hurtling to the roof of Orthanc. In the book, no such conflict occured. Saruman's guards merely placed Gandalf on the tower.
Yes, the wizard(Gandalf) likes Bilbo very much. It is by the will of Gandalf that Bilbo comes along with the dwarves for the quest. His concern for Bilbo can be seen when all the dwarves come out from goblin's cave but Bilbo remains behind. Gandalf continues to visit Bilbo even after the end of dwarves quest.
Gandalf was originally known as Gandalf the Grey. After his rebirth, he became Gandalf the White in replacement of Saruman. Gandalf the Grey and after his resurrection he became Gandalf the White.
He is part of the fellowship of the ring. He acted as their guide. He was gandalf the grey and then he returns as gandalf the white in 'the two towers.' To add to that he is awesome!
Gandalf the white
you have gandalf, you have the 2 blue wizards, the white wizard (i forgot his name :/) and you have the brown wizard (forgot his name too :/) Thats what gandalf says when the hobbit asks him. the blue wizard's names are Alatar and Pallando, the brown wizard is Radagast, and the white wizard is Saruman
Gandalf the White Wizard
Saruman the White
The basic background behind the character Gandalf from the Lord of the Rings Series is that he is a wizard. He is initially called Gandalf the Grey but after resurrecting he is then referred to Gandalf the White.
Gandalf
Gandalf was originally Gandalf the Grey, but after he was reborn he became Gandalf the White. He was played by Sir Ian McKellen in the popular movie series. Saruman was the white wizard in the Fellowship of the ring. Gandalf was the grey wizard. Since Gandalf fell in Moria, he was sent back, thus given a different color. So Gandalf became Gandalf the White and Saruman was left without a color and defeated.