Time Twins

The Time Twins are a pair of villainous siblings, Acronix and Krux, who are allied with the Vermillion.

History
At some point the Time Twins were acquainted with Sensei Wu, but were thought by him to be "lost to time."

Dark Island Trilogy, Part 3
Following the defeat of Clouse's plans to corrupt the Temple of Light on The Dark Island, Wu received a sense of foreboding and a vision of the Twins making their return.