The Night of the Living Duelists - S3-E18
Continuity mistake: When Bastion is writing a really long equation on the walls, the piece of chalk he is holding is level with his neck, but in a closer shot, the chalk is raised above his head. (00:02:58)
The Night of the Living Duelists - S3-E18
Continuity mistake: When the Duel Ghouls are trying to get into the nurse's office, Ms Fontaine tries to make an emergency call on her device. Her fingers are placed over the back of the device, but when the shot cuts, her fingers are placed over the side of the device. (00:14:50)
The Night of the Living Duelists - S3-E18
Revealing mistake: When the Duel Ghouls are approaching the main characters, in the shot where Chazz walks to the front of the crowd, there are three ghouls who are drawn black, with no facial features or clothing, to give off the impression that they are shadowed. (00:16:00)
The Night of the Living Duelists - S3-E18
Continuity mistake: After Flame Wingman blows a hole in the wall and the gang escapes, the Duel Ghouls walk up to the wall. There are two circular pieces of rubble on the floor that move closer to the wall when it is shown from the outside. (00:19:20)