Jessie: Season 2, Episode 23

2 - 23: The Jessie-nator: Grudgement Day

Future Jessie appears from an elevator time machine to warn present Jessie to run for her life. She tells Jessie that when Ravi grows up, he invents a robot version of Bertram (a "Bertram-Bot") that evolves into an army which tries to destroy Jessie and take over the world.