The first of SpongeBob’s family to foray into time was Squidward, whose accidental cryofreeze took him two millennia into the future. Of course, even primitive sponges know that that was not actual time travel, but future-SpongeTrons point the six-limbed cephalopod to a time machine that took him on two actual time travel trips before returning him to his own time. No, we don’t know whether one of the future SpongeTrons is SB-129, but we do note that the production code for this episode was 2515-129.

Each installment of Andy and Terry’s Treehouse series sees the house grow upward, but what if the house never had a proper building permit? No problem, if you’ve got a time machine in a wheelie trash bin! Caution: Important detours along the way may be necessary to save antkind and The Time Machine.

A decade after David Thorne’s wife goes missing on a solo trip to northern California, her exact duplicate shows up—without having aged a day and claiming not to be Emily—at a bar in one of David’s favorite restaurants.