Pokemon/Monsters, Inc.

Version 1

 * Brock as James P. Sullivan
 * Ash as Mike Wazowski
 * Molly Hale as Boo
 * James as Randall Boggs
 * Giovanni as Henry J. Waternoose
 * May as Celia Mae
 * Jessie as Roz
 * Kenny and Barry as Smitty and Needleman
 * Butch as Fungus
 * Mr. Parker as Yeti (Abominable Snowman)
 * Cilan as Thaddeus "Phlegm" Bile
 * Iris as Ms. Flint
 * Professor Rowan as Jerry
 * Wallace as George Sanderson
 * Gary Oak as Peter "Claws" Ward
 * Tracey as Ted Pauley
 * Police Officers as the CDA

Version 2

 * Ash as James P. Sullivan
 * Max as Mike Wazowski
 * Vivi Winstrate as Boo
 * James as Randall Boggs
 * Giovanni as Henry J. Waternoose
 * Bonnie as Celia Mae
 * Jessie as Roz
 * Kenny and Barry as Smitty and Needleman
 * Butch as Fungus
 * Mr. Moore as Yeti (Abominable Snowman)
 * Clemont as Thaddeus "Phlegm" Bile
 * Shauna as Ms. Flint
 * Professor Rowan as Jerry
 * Cilan as George Sanderson
 * Khoury as Peter "Claws" Ward
 * Drew as Ted Pauley
 * Police Officers as the CDA