For the Genie from Aladdin (1992), the studio and filmmakers received permission from Robin Williams' estate to use unreleased recordings of him from when they made Aladdin.
This was the first time Nathan Lane reprised his role as Timon in media outside of the three main Lion King films. Previously in non-film appearances, Lane would be filled in by Quinton Flynn, Kevin Schon, and Bruce Lanoil.
This was the first Disney film (feature length or short) to use a combination of hand-drawn animation and computer animation with live-action footage.
Alan Tudyk voices the Mad Hatter from Alice in Wonderland (1951) instead of Corey Burton. Previously Tudyk based King Candy's voice in Wreck-It Ralph (2012) off of the Mad Hatter that was originally voiced by the late Ed Wynn.