"Teridax was also released as a combiner model of this set, 8622 Nidhiki, and 8623 Krekka, and as a "Special Edition" promotional set which contained all three. This set was called "Ultimate Dume" and was a Toys "R" Us exclusive that contained 555 pieces. The set depicts the form Teridax takes in Legends of Metru Nui, and features a new Movie Edition Kraahkan."
"From out of the shadows steps an armored colossus that holds the fate of the Matoran in its claws. The powerful new enemy of the Toa Metru from BIONICLE 2: Legends of Metru Nui is out to seize control of the future - and it's ready to crush anyone who gets in its way."
— LEGO Magazine September-October 2004
The Ultimate Dume set is, according to the above, meant to be the BIONICLE 2 form. According to the events of Time Trap, the 2003 form and the Ultimate Dume form's only difference in canon is that in 2003 he has no wings, due to them being disintegrated by The Shadowed One.