Mr. Stenchy - S1-E4
Continuity mistake: The second time that Jumba shoots Gantu with the orange string that wraps him up, the highest it gets is his shoulders, however, when Gantu falls to the floor, the string is now in three ringlets above his forehead.
Clash!! Sonic VS Knuckles - S1-E5
Continuity mistake: When Eggman is holding Knuckles' hands, Knuckles' eye color constantly changes from purple to green.
Continuity mistake: After Amanda calls Angelica to tell her that she can't make it to her party, she takes her RSVP card from the "Yes" box to the "No" box. The problem is, the check mark on the card magically changes from being by the yes to being by the no without anyone touching it.