Tim showed me the one Zim time-travel episode (“Big, Bad Rubber Piggy”) on Christmas Day
in 2010. The would-be alien invader Zim plans to send a terminator robot back to kill is
nemesis Dib, but the time-travel portal will accept only rubber piggies, which Zim manages to
make do with.
You could prevent Walton Chunky from ever inventing Breakfast Chunks by using temporal
object replacement technology!