- "Listen, destroying history for personal gain, it's happened to almost everyone here. Rite of passage."
- —Zari Tomaz to Charlie
|After Constantine breaks the cardinal Legend rule, you can't change the past, he, along with Charlie and Zari try to deal with the ramifications without telling the rest of the Legends. Even though Zari encourages them to just fix the problem, Constantine and Charlie are determined to find another way, but only continue to make things worse.|
- Brandon Routh as Dr. Ray Palmer/The Atom
- Caity Lotz as Charlie (as Sara Lance) and Captain Sara Lance/White Canary
- Maisie Richardson-Sellers as Charlie
- Tala Ashe as Zari Tomaz
- Jes Macallan as Director Ava Sharpe/Roundhouse and Charlie
- Amy Louise Pemberton as Gideon/Hard Drive
- Ramona Young as Mona Wu
- Nick Zano as Dr. Nate Heywood/Steel
- Dominic Purcell as Mick Rory/Heat Wave
Special appearance by
- Adam Tsekhman as Charlie (as Gary Green) and Agent Gary Green
- Tom Wilson as Hank Heywood
- Christian Keyes as Desmond and Neron (possessing Desmond)
- Jane Carr as Tabitha/Fairy Godmother and Charlie
- Jordyn Ashley Olson as Prudence Hawthorne
Special appearance by
- Jocelyn Panton as Marilyn Monroe
- Wesley MacInnes as Red
- Vesna Ennis as Garima
- Aaron Joseph as Drunk Man
- Jeny Cassady as Puppeteer #1
- Jamie Swettenham as Puppeteer #2
- Glenn Williams as Puppeteer #3
"Legends of To-Meow-Meow" begins with Charlie returning so as to find a previous companion, who seems, by all accounts, to be a genuine leprechaun. Charlie discloses to her companion that she's attempting to disappear and remain off the Legends radar. Beam, Mick, and Nate stroll in and Charlie shapeshifts into Marilyn Monroe. The trio shoots the leprechaun, executing him.
Back on the Waverider, Charlie asks Gideon what occurred with the gathering and Gideon illuminates them that the time break made the Legends transform into the "Caretakers of the Chronology" and they presently shoot without hesitation. Charlie attempts to shapeshift into Sara to fight the gathering into request yet it's uncovered that Sara's passed on.
They take a stab at executing Charlie however she's ready to make it off the Waverider with Zari — who's as yet a feline — close behind. Charlie shows up at the Time Bureau and shapeshifts into Gary. After a short time, Hank Heywood goes up against Gary since everything at the Time Bureau is going to "total ruin." Charlie's ready to discover Constantine, who's been imprisoned for quite a long time.
Constantine's ready to change Zari again into a human and she's illuminates the gathering that Constantine broke time when he changed his past with Desmond. Zari discloses that they have to return in time and fix Constantine's past with Desmond however John and Charlie decline. They choose to return to Woodstock and spare Sara from her passing. Zari takes a stab at halting them, yet is turned around into a feline by Constantine.
On out, Charlie and Constantine are chanced upon by Mona, who offers to get them out in light of the fact that she's against the methods of the Custodians too. The trio winds up enrolling Ava to their crew subsequent to revealing to her that Sara is alive in the correct timetable.
They're advancing out of the Time Bureau when they catch the Custodians. After a short battle, Ava, Zari, Charlie, and Constantine can get away and they return so as to spare Sara at Woodstock. They oversee on sparing their chief, yet when they return to introduce day, they discover that Nate, Mick, and Ray are presently dead.
In the new course of events, Sara, Ava, and the human encapsulation of Gideon have combined as the Sirens of Space-Time. Charlie professes to be Amaya and joins the trio in their new wrongdoing battling gathering. The group of four leaves for a strategic on their adaptation of the Waverider, they reveal to Charlie that they additionally murder the entirety of the time misplacements. Charlie takes a stab at sneaking off to find support from Constantine and Zari, however the trio before long discovers.
Charlie's ready to get away and returns to the unit with Constantine and Zari, who's as yet a feline. The trio returns to Salem trying to spare Nate, Ray, and Mick from the Fairy Godmother. They spare the folks and go to head once more into the current course of events again just to find that Zari's been transformed from a feline into a ventriloquist sham. Charlie and Constantine go out on the Waverider to discover that the whole group has been transformed into the manikins.
We at that point see a speedy arrangement of the group keeps on returning in time, attempting to fix the course of events. Each time another person winds up dead before they in the long run get everything fixed. Charlie, Zari, and Constantine are talking about their prosperity when John out of nowhere drops. The gathering understands that Constantine will in the long run wind up killing himself on the off chance that he doesn't return and fix the course of events.
Constantine and Zari head back again to attempt to right the course of events and take a stab at following him down to murder him. In the new reality, they think Constantine is a shapeshifter. Charlie uncovers herself to be the shapeshifter with an end goal to spare John's life. She asks the gathering what befell them to make them fixated on murder.
In 2018 New Orleans, right course of events John fixes the timetable, guaranteeing Desmond is sent to Hell all things considered. Charlie, Zari, and John show up back on the Waverider to discover the remainder of the time tying up the had Victor Stein doll from a week ago's scene.
In the right course of events, Mick heats Ava a group of snickerdoodle treats and the two bond over the original copy for Mick's epic.
Constantine bulls Sara aside to let them know of the course of events incidents. Constantine reveals that is he's being pursued by the evil spirit Neron and approaches Sara for their assistance.
Hank Heywood is out hitting the fairway when it's uncovered that he's been accepting requests from Desmond, who has been genuinely adjusted.
Preparation ran from September 17 until September 25, 2018. Shooting began on September 26 and ran until October 9, 2018, with a break on October 8 for Canadian Thanksgiving.
- The episode's title is a direct play on the series' name and the fact that Zari is stuck in the form of a house-cat.
- This episode marks Amy Pemberton's third physical appearance as Gideon in human form. She had previously appeared in "" and "" as a neural projection in a virtual hallucination, along with being featured on a photograph in "".
- In one timeline, she is shown as a fully-human holographic projection, and in another she is shown as an active member of the 'Sirens of Space-Time' along with Sara and Ava; considering her code name of 'Hard Drive', the simplest explanation is that this version of Gideon is essentially the ship's android avatar, much like Rommie in Gene Roddenbery's Andromeda.
- This episode marks the first time the Legends are called "Legends of Tomorrow" on-screen.
- However, Martin Stein previously called them this in the opening monologue of "".
- Thanks to the "Puppets of Tomorrow" timeline, this episode also marks the first appearance of the White Canary suit since "" and the first appearance of the Steel suit since "".
- In one of the timelines, Ray Palmer, Nate Heywood, Mick Rory, and Garima are a group called "Custodians of the Chronology", which may be a parody of the film Guardians of the Galaxy
- In another timeline, Sara Lance, Ava Sharpe and Gideon form a group called "Sirens of Space-Time", which is a parody of the Charlie's Angels franchise.
- Hank says "Good morning Sirens" to which they reply "Good morning Hank" . This sounds exactly like "Good morning Angels" " Good morning Charlie" from "Charlie's Angels".
- The pose struck by the Sirens of Space-Time is highly influenced by the logo of "Charlie's Angels".
- When Gideon tells the Custodians that they missed a message from Barry Allen, Oliver Queen and Kara Zor-El, Ray says “Sounds like the annual crossover”. This is a reference to the fact that the crossover event aired the same week as the episode did, being broadcast back-to-back with "".
- Nate responds with "That's gonna be a hard pass", referring to the fact that although the last two Arrowverse crossovers included the Legends, they aren't a part of this one.
- They also jokingly said "I bet this year they'll swap costumes.", referring to the life-switch that happened to Barry and Oliver during the crossover, which made them wear each other's superhero suits.
- Both the Custodians and the Sirens referred to the Shape-shifters as their "white whales", referencing the Moby Dick franchise and its characters.
- When Ava is reading Mick's novel in the med bay, it's title is shown to be "Heatwaves", which is a reference to his alter-ego.
- When Charlie and Constantine are trying to explain the alternate timeline to a morose Ava, she replies, "I don't have time for this timey-wimey crap." This is likely a reference to the Tenth Doctor of the BBC series Doctor Who, who often refers to time as "a big ball of wibbly wobbly, timey wimey stuff."
- All the weapons the Sirens took while getting ready for a mission have been used by a current or former member of the Legends' team. Sara took Mick's Heat Gun, Ava got Leonard Snart's Cold Gun and Gideon took Rip Hunter's pistol.
- Upon seeing the Puppets of Tomorrow, Constantine asks, "What the Fraggle Rock is going on here?" referring to the 1983 TV series of the same name.
- Zari doesn't act like a goofy kids' show character like the rest of the Puppets of Tomorrow when she turns into a puppet.
- Could be explained due to her current anomalous status being caught in the time paradox rendering her slightly immune to the spell.
- Why preventing Desmond from being sent to hell causes the initial change is never addressed. Constantine still would have been spooked by Neron into joining the Legends for his own safety.
- Constantine says that by banishing Neron to hell, he also unintentionally sent Desmond to hell due to the latter bonding his soul to the demon in exchange for Neron sparing John. However, as seen later on after Neron bonded with Ray Palmer, Neron using Desmond as a vessel should've also sent Desmond to hell. This means Desmond would've been in hell already; regardless of John's effort to banish Neron.
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