No. Wolverine belongs to Marvel Comics, and he has been a member of the Avengers and X-men. The Justice League (Superman, Batman, Wonder Woman, Aquaman, Flash, etc.) belong to DC Comics.
The Second Episode in the Justice League animated series is "Secret Orgins part 2" as it is a three part episode
No
If you are talking about the character from folklore, no, he is not in the Justice League. However, Green Arrow, the guy that LOOKS like robin hood, was formerly part of the Justice League.
yes
Green Lantern is DC while The Hulk, Spiderman and Wolverine are Marvel Characters. For DC, they have "The Justice League" For Marvel, they have "The Avengers" So for The Avengers, I know for sure Captain America, Thor, Iron Man are in it. I'm not too sure about Spiderman or Hulk or Wolverine. For The Justice League, it's Flash, Batman, Superman, Green Lantern, Wonder Woman, Martian Manhunter and I think there might be more.
the two-part episode "A Better World".
Justice League - 2001 Legends Part II 1-17 was released on: USA: 28 April 2002
Justice League - 2001 Metamorphosis Part II 1-23 was released on: USA: 11 October 2002
Justice League - 2001 Hereafter Part II 2-20 was released on: USA: 29 November 2003
Justice League - 2001 Twilight Part II 2-2 was released on: USA: 5 July 2003
Justice League - 2001 Starcrossed Part III 2-26 was released on: USA: 29 May 2004
Wonder Twins, the were part of the Justice League.