Who are "those guys from Season 4" that Yu-Gi-Oh The Abridged Series references? In the Yu-Gi-Oh! The Abridged Series stand-alone video Pharaoh's Throne, Yami Yugi sings the lines:

♪ Not for nothing but your nonsense is kind of a bore ♪
♪ I was more intimidated by those guys from Season 4 ♪

While the lines are very clever-sounding and inherently funny IMO even without context, I am curious as to who it is referring to.  Who are &quot;those guys from Season 4&quot; that the song references who are apparently a joke?  Unfortunately, the YGO:TAS is a very extensive series at this point, and I am not familiar with all of the episodes.
There is no YGOTAS season 4 yet, so "these guys from season 4" are from the actual show when it starts getting all trippy and Egyptian.