Animation Changes

Animation Changes have taken place throughout the series, beginning after the fourth season. The first four seasons were produced using a variety of programs, mostly Power Animator. Season five was delayed six months into June so the animation staff could learn Maya. As a result, the series' animation has changed greatly.

Character Revisions
In newer episodes, many characters' designs have changed as a result.
 * Randy Marsh: As of "Chickenlover" has a different hairstyle and a dumpled chin.
 * Pip Pirrup: As of "Fourth Grade" has slightly updated hair, including a small fringe visible from his hat.
 * Jesus Christ: As of "Super Best Friends" has a sash.
 * Jimbo Kern: As of "Night of the Living Homeless", Jimbo's waist and vest have been greatly updated with a 3-D look instead of 2-D - his shirt also now has a collar.
 * Mr. Mackey: As of "Major Boobage" his shirt now has a pocket and an even collar and tie. He also has a belt.
 * Herbert Garrison: As of "Eek, a Penis!" after his second sex change has an even collar and a belt.
 * Gerald Broflovski: As of "Major Boobage" has a different collar and a new yamulke.
 * Thomas Tucker and Mrs. Tucker: As of "Pandemic" their faces have both been given a slight clean-up, including the hair.
 * Stuart McCormick: As of "Pinewood Derby" has a new collar, and a cleaned up body and hat.
 * Carol McCormick: As of "Pinewood Derby" has cleaned up hair and a new T-shirt and pants.
 * Mayor McDaniels: As of "The F Word", the Mayor has a new collar and a small medal.
 * Kevin McCormick: As of "Sexual Healing" has new effects on his hair.
 * Mecha-Streisand: As of "200" has a completely new and fully 3-D look.
 * Dr. Alphonse Mephesto: As of "201" his wrinkles are softened and his hat now has a 3-D effect to make it's bottom visible, and his collar has been modified.