The Rotten Egg

Wet-Suit's outfit changes color.^[1]
Wet-Suit's oxygen tanks and Leatherneck's backpack suddenly appear out of nowhere during some scene shifts.
In one scene, Hawk's face is not completely painted.
Buck McCann's outfit changes from gray to blue to white for a few cels during his tussle with Leatherneck.
As he drives past Leatherneck, Zandar is bald.

=Continuity errors

Leatherneck knocks Zandar off his chopper and steals it, yet in the next scene Zandar is once again riding on a chopper with no explanation as to where it came from.
When the Dreadnoks arrive at Parris Island they fight the Cobra troops instead of G.I. Joe.
While named the "Cobra Elite Corps" and implied to be the Cobra version of G.I. Joe and/or the United States Marine Corps, none of the Cobra recruits showed any skill. In particular, the training and acceptance standards were inferior to real world military standards. Buck McCann showed foresight by spreading the escaped mental asylum patient story and commenting on Leatherneck's ease of escape. Shiela McDermott was easily defeated and was shown to be "all style, no substance". Mike P. Randall showed no energy about Cobra's methods and idealogy. The other cadets were easily defeated. Serpentor makes a valid point when he states that the cadets look impressive, but asks "can they fight"?
At the end of the episode, the ground beneath McCann changes from grass to concrete as he stands up.
In most of the flashbacks, Leatherneck is still wearing all of his field gear, even when the Drill Pad at Parris Island as a Drill Sergeant would be the last place he would need it.

The "Now You Know..." attached to this episode involved Spirit teaching kids not to underestimate someone who had lost one of their five senses.