A Fistful of Brains

A Fistful of Brains is the ninth episode of the fourth season of Ben 10: Omniverse, and the thirty-ninth episode overall.
==Synopsis==
Grandpa Max and Rook are looking all over the galaxy for Ben, who is trapped on Khyber's hidden personal hunting preserve.
==Plot==
The episode begins with Ben and Rook chasing Albedo in Undertown. Albedo runs into a building and Ben goes in too, and just as Rook is about to get in, they realize that it is a spaceship and it flies away with Ben. In Plumber Headquarters, Rook informs Max that Ben is missing. 
Ben is trapped in Khyber's personal hunting preserve and encounters a wild Slammoid. He tries to transform into Way Big but fails when the creature hits the tree Ben is on and Ben transforms into Cannonbolt instead. The wild Slammoid becomes nervous after a Crabdozer walks up behind Cannonbolt. It then hides underground, leaving a flower on top of it. The Crabdozer growls, making Cannonbolt afraid to look behind him, hoping if it isn't his natural predator. Meanwhile, Rook and Max are trying to search for Ben's DNA across the galaxy.
Cannonbolt encounters Khyber and his newest pet, a Panuncian. After Cannonbolt transforms back into Ben, Khyber proposes for Ben to participate in a hunting challenge. Ben transforms into Ditto and creates clones of himself, and he learns from Khyber that Panuncians are the natural predators of Splixsons. Khyber then presses the Nemetrix and the Panuncian splits into four and the Dittos run away from it, with one going into a cold area, one going into a desert and two going into a cave. The Ditto in the cold area runs into a Panuncian, but escapes when he splits into three and the trio swims together to get away from the predator. In the desert, the other Ditto digs underground, playing Whack-a-Mole with the Panuncian. At the cave, the other Dittos split into three, going into three tunnels. The Panuncian then splits into the same number to chase them. One of the Ditto clones sees the end of the cave, and the other Dittos follow, with the Panuncians on their tail.
In the meantime, Rook and Max land themselves on Gliese 667C. They find a white hair which matches Ben's DNA but is instead Albedo's. They go back to the spaceship and try again to search Ben's DNA. Magister Patelliday shows up on a computer to inform the two that he didn't find Ben's DNA, but Rook and Max already found his DNA and follow it. Back at the desert, the Panuncian realizes that the Ditto split into ten, and the Panuncian splits into ten as well. They chase the ten Dittos, but they manage to escape. In the cold area, the other Dittos escape through a tunnel after merging all Dittos into one. After Ditto transforms back into normal, he sees Khyber, who whistles to the Panuncians, causing them to transform into all of the Nemetrix aliens, leaving Ben surrounded. Rook and Max finally reach where Ben's DNA is located, then Albedo shows up on their computer, informing the two that he sent some Mechadroids to defeat them. 
At the hunting preserve, Ben tries to transform into Way Big again, but transforms into Astrodactyl instead and flies into the sky, and learns that it isn't a sky, but a ceiling. Astrodactyl goes through it, reaching Albedo's location. He sees Albedo as Brainstorm, whom he briefly mistakes for Dr. Psychobos, and they fight. Astrodactyl transforms back into Ben, and Negative Brainstorm transforms back into Albedo's Galvan form. Ben tells Albedo to leave him alone now that Albedo has what he wanted; the power to return to his true Galvan form. Albedo instead wants to have revenge on Ben for his humiliation and imprisonment. Ben tells him to let it go, but Albedo becomes angry and evolves into Ultimate Albedo and shows Rook and Max that they are in trouble. He shows a device so that Rook and Max won't be able to find Ben and he tries to shoot lasers at Ben, but they hit the device. 
Rook and Max encounter Albedo's drones, as the spaceship shows up where Ben is. The drones follow them to the spaceship, but are defeated by Max. Meanwhile, Ben transforms into Eye Guy, Upchuck, and Goop to defeat Ultimate Albedo, but fails. Ben then transforms into Shocksquatch to battle him, but Ultimate Albedo transforms into Ultimate Spidermonkey who easily defeats him by climbing on a long platform, catching Shocksquatch and tying him up in his web, and allowing Shocksquatch to fall down to the ground. After Shocksquatch transforms back into Ben, Negative Ultimate Spidermonkey leaps off of the platform and transforms into Ultimate Humungousaur and Ben transforms into Crashhopper and then Diamondhead but is defeated and transforms back into normal. Rook and Max arrive, and Ben tries to transform into Way Big again, but transforms into Feedback instead and defeats Negative Ultimate Humungousaur by redirecting his missile back at him and electrocuting him. and Negative Ultimate Humungousaur transforms back into Albedo's Galvan form. After Feedback transforms back into normal, Rook and Max capture Albedo, but Albedo declares that Ben and his team haven't really won. Khyber arrives with three Panuncians and shows them that they have Azmuth held captive.
==Noteworthy Events==
===Major Events===
*It is revealed that Azmuth was kidnapped by Khyber and Albedo.
====Character Debuts====
*Purple-Worst
*Slim-Worst
*Khyber's Panuncian
===Minor Events===
*Ditto's species and homeworld are revealed.
==Characters==
*Ben Tennyson
*Rook Blonko
*Atrocians
**Purple-Worst (first appearance; cameo)
**Slim-Worst (first appearance; cameo)
*Tentacle Vendor
*Max Tennyson
*Plumbers
**Magister Patelliday
**Bromeba (cameo)
**Leadfoot (cameo)
**Chortle (cameo)
**Robucket (cameo)
**Stick Doug (cameo)
*Azmuth (cameo)
===Villains===
*Albedo
*Khyber
*Khyber's Panuncian (first appearance)
*Mechadroids (first reappearance)
==Aliens Used==
===By Ben===
*Cannonbolt (intended alien was Way Big)
*Ditto
*Astrodactyl (intended alien was Way Big)
*Eye Guy
*Perk Upchuck (cameo)
*Goop (cameo)
*Shocksquatch
*Crashhopper
*Diamondhead
*Feedback (intended alien was Way Big)
===By Albedo===
*Brainstorm
*Albedo's true form (x2; second time goes Ultimate)
*Ultimate Spidermonkey
*Ultimate Humungousaur
*Ultimate Albedo
===By Khyber's Panuncian===
*Crabdozer
*Omnivoracious
*Terroranchula
*Slamworm
*Hypnotick
*Tyrannopede
*Mucilator
*Buglizard
*Vicetopus
==Quotes==
==Naming and Translations==
==Cast==
==Allusions==
*The title of the episode is a reference to the cowboy movie A Fistful of Dollars.
*Ben's note on "surviving until sundown" is a reference to the 1924 short story The Most Dangerous Game. The episode had many similarities to the story, such as Khyber's Panuncian being similar to General Zaroff's hounds.
*Ditto's line "I knew we shouldn't have taken that left turn at Albuquerque," alludes to Looney Tunes as it is a line frequently said by Bugs Bunny whenever he ends up in a drastically different location to what was intended.
==Errors==
*The episode aired with a lighter color palette than the rest of the series. However, this error is corrected on the Ben 10 Omniverse: Duel of the Duplicates DVD and the Arabic dub of the series.
*In one shot, the black stripes on Rook's head are gone.
*When the Dittos fall into the water, one of them has an Omnitrix symbol with a green rim.
*When two Ditto clones vanish before the Panuncians and say, "Three against one?", there are only two Panuncians.
*When Ultimate Albedo shows Ben footage of Max and Rook, Max's black shirt was missing.
*When Eye Guy charges up his chest eye, the darker side of his skin faces incorrectly on his arms.
*Ultimate Albedo shoots a blast at Eye Guy's eyes, but when he reverts to Ben, he rubs his head.
*When Ben transforms into Upchuck, he is seen holding a piece of metal, despite not holding one before transforming.
*When Shocksquatch attacks Ultimate Albedo, part of his suit is the same color as his skin, instead of red.
*After Shocksquatch transforms back into Ben, Negative Ultimate Spidermonkey's web is gone.
*In one shot, Crashhopper's hands are the same colors as his toes.
*In three shots, Negative Ultimate Humungousaur's Ultimatrix symbol is not crooked.
*When Feedback laughs at Albedo's defeat, one of his antennae is briefly not colored in.
*Ultimate Echo Echo and Ball Weevil are listed in the end credits despite not appearing.
UPdC (259).png|Missing stripes
UPdC (291).png|Omnitrix symbol error
UPdC (311).png|Two Panuncians
UPdC (459).png|Missing black shirt
Ult.Albedo his clothes are wrong.png|Color error
UPdC (508).png|Skin facing wrong way
UPdC (513).png|Eye Guy is hit on the eyes
UPdC (514).png|Ben rubs his head
UPdC (518).png|Metal piece appearing out of nowhere
UPdC (540).png|Missing web
UPdC (559).png|Miscolored hands
UPdC (608).png|Ultimatrix symbol error
UPdC (627).png|Missing antenna color
AFOB Voice Credits.png|Ultimate Echo Echo and Ball Weevil in the credits
==Trivia==
*This episode aired in Spain on November 21, 2013.
*This is the only episode of Omniverse to feature all the Nemetrix aliens.
*The cold open of the episode was storyboarded by Jae Hong Kim.
**Albedo looks exactly like Ben in the storyboards.
==References==
===Crew Statements===
====Derrick J. Wyatt====
====Jae Hong Kim====
===Cartoon Network===
es:Un puñado de cerebros
pl:Za potęgę mózgu
pt-br:Um Punhado de Cérebros
ro:Un pumn de creier
Category:Episodes
Category:Two Part Episode
Category:Ben 10: Omniverse Episodes
Category:Episodes Aired Out of Production Order
Category:Ben 10: Omniverse Season 4 Episodes
Category:Episodes Written by Charlotte Fullerton
Category:Episodes Directed by Jae Hong Kim