In "Time Heals", Gwen infiltrate his house to steal the Grimor of Archamada, and, despite Paradox's warning, use it to time travel to the past and prevent Ben and Kevin's from hacking the Omnitrix, canceling Kevin's mutation.
In "Time Heals", Gwen infiltrate his house to steal the Grimor of Archamada, and, use it to time travel to the past and prevent Ben and Kevin's from hacking the Omnitrix, canceling Kevin's mutation. This is despite Paradox's warning.