This is a "Wild Mass Guess" entry, where we pull out all the sanity stops on theorizing. The regular entry on this topic is elsewhere. Please see this programme note.
The Amazing Spiez
There will eventually be a group of four evil spies to rival the Clarks, formed from their Evil Counterparts.
With Mel from "The Spy Sitter" as the evil counterpart to Lee, Kat from "Operation Terrible Thirteen" as the evil counterpart to Megan, Davey Hacker from "Operation Cruisin' for a Bruisin'" as the evil counterpart to Marc, and Archibald from "Operation Grow Up" as the evil counterpart to Tony, with Sherry as the counterpart to Jerry and the one who forms the team. It's already been stated that at least Mel and Davey are former WOOHP members and/or candidates. The season three premiere may be a two-part episode involving the formation of this group.