It's a Mad, Mad, Mad, Mad Scientist

Synopsis
After Sara, Ava, Behrad and Gary arrive in New York City, they track down Dr. Gwyn Davies, who isn't the scientist they expected. Astra, Spooner, and Gideon are still trying to stop the Legends from using the time machine, but they run into some more setbacks along the way. Meanwhile, in the pocket dimension Nate and Zari work together on the Hoover situation as well how to make their future together work.

Main Characters

 * Legends of Tomorrow
 * Gary Green
 * Sara Lance
 * Ava Sharpe
 * Behrad Tarazi
 * Nate Heywood
 * Zari Tomaz
 * Astra Logue
 * Gideon
 * Esperanza "Spooner" Cruz
 * Gwyn Davies

Villains

 * J. Edgar Hoover

Other Characters

 * Dr.
 * Dr.
 * Dr.
 * Dr.
 * Dr.
 * Dr.
 * Dr.
 * Dr.

Teams and Organizations

 * Legends of Tomorrow
 * Legends of Tomorrow

Species

 * Humans
 * Necrians
 * Human-Alien Hybrid Clones
 * Clones
 * Robots
 * Metahumans
 * A.I.

Objects

 * Image Inducers
 * Totems of Zambesi
 * Totem Wristbands
 * Air Totems
 * Magic
 * Timeships
 * Rogue Waverider
 * Gwyn Davies' Time Machine
 * Time Aberrations
 * Gwyn Davies' Time Machine
 * Time Aberrations

Locations

 * Earth-Prime
 * Earth
 * USA
 * New York
 * New York City
 * Ohio
 * Russia
 * Hell
 * Phantom House
 * Ohio
 * Russia
 * Hell
 * Phantom House
 * Russia
 * Hell
 * Phantom House
 * Russia
 * Hell
 * Phantom House
 * Hell
 * Phantom House