Complex sentence: When Mayor West is playing as a contestant on "Jeopardy!", he spells the name of the host, Alex Trebek backwards, sending him back to the fifth dimension; this is a reference to former animated series: "Super Friends".
Split into simpler sentences: When Mayor West is playing as a contestant on "Jeopardy!", he spells the name of the host, Alex Trebek backwards, thus sending him back to the fifth dimension. This is a reference to former animated series: "Super Friends".