The show appears on Disney Junior, so yes, as characters in a Disney show they're "Disney Characters".
The premise is based at least partially on Peter and Wendy by JM Barrie, but the major characters in the show (with the obvious exceptions of Hook, Mr. Smee, and the crocodile) were not created by Barrie. A few minor recurring characters (the Darlings and Peter Pan) are Barrie creations.
Jake and the Never Land pirates!
Jake and the Never Land Pirates is an animated TV show that currently airs on Disney Junior. Wendy Darling does not appear in this show.
Skully
Jake and the Never Land Pirates - 2011 Jake's Awesome Surprise was released on: USA: 2014
Jake and the Never Land Pirates - 2011 Jake and the Mystery Pirate was released on: USA: 2013
Jake and the Never Land Pirates - 2011 is rated/received certificates of: Singapore:G
Jake and the Never Land Pirates - 2011 Look Out--- Never-Sharks was released on: USA: 2014
Jake and the Never Land Pirates - 2011 The Never Bloom Jake's Starfish Search 1-12 was released on: USA: 28 February 2011
Jake and the Never Land Pirates - 2011 Witch Hook was released on: USA: 2014
Jake and the Never Land Pirates - 2011 The Tale of Ratsputin was released on: USA: 2014
Jake's voice in "Jake and the Never Land Pirates" is provided by actor and voice artist Colin Ford. The show, which aired on Disney Junior, features Jake as the adventurous leader of a group of young pirates. Colin Ford's performance brought energy and enthusiasm to the character, making him a favorite among young audiences.
Jake and the Never Land Pirates - 2011 Jake Saves Bucky 2-13 was released on: USA: 19 September 2012