PhD Flopper

"It has Doctor in the title... Just like me!"

- Edward Richtofen

PhD Flopper is a Perk-a-Cola featured in Zombies. It was introduced along with Stamin-Up in the map Ascension and returns in Call of the Dead, Shangri-La, Moon and Cell Block. PhD Flopper also makes an appearence as an unobtainable Easter Egg on the maps Die Rise and Mob of the Dead.

The Perk-a-Cola costs 2000 points and it has a dark blue and purple color scheme. The color of this perk is purple, and the icon is a nuclear symbol. PhD Flopper completely negates self-inflicted damage; however, the player will still groan and suffer temporary movement reduction when falling down from an elevated area. Another feature of this perk is that when players dive to prone from a height from which they would normally take damage, a 7.5 meter radius explosion is created upon landing.

The explosion is very powerful, with a maximum of 5000 damage at the center of the blast radius, and can kill zombies with one hit up to approximately round 20. Between rounds 20 to 30, PhD Flopper will begin to make crawlers, and on rounds beyond 30, zombies will retain their legs even in the center of the blast. The perk is made from prunes and some types of chemicals. However, as this is an explosive "weapon", it should be noted that the player only receives 50 points per kill, when opposed to the 60 points that are acquired by using a bullet firing weapon, so using a gun would be advised if the player is going to buy something, such as other Perk-a-Colas. This perk does not seem to work when diving right on top of multiple zombies. It should also be noted when "Flopping" that landing on a prone player while diving to prone will cause both players to be downed instantly, so one should avoid other teammates while diving. In Call of Duty: Black Ops II, it is currently found in the maps Die Rise, Mob of the Dead and Buried. However, in both Die Rise and Mob of the Dead it is an unobtainable Easter egg, where as in Buried it features as a perma perk. In Die Rise the Perk-a-Cola machine appears to be in a hallway but the doors on both sides of the machine do not appear to have floor only revealing sky. This confirms it CANNOT be obtained. Similarly, PhD Flopper can be found on a boat along with Mule Kick across from the docks in the map Mob of the Dead. It is laying over on its side with no power source, so the Perk-a-Cola is not obtainable in this map either. However it is available in the Grief mode version of the map Cell Block. It costs the player the normal price of 2000 points and has the same functionality as in previous maps, but with a updated icon. In Buried, PhD Flopper can be obtained in part as a Persistent Upgrade.

Locations

 * Ascension - Across from the Lunar Lander (closest to MP5K), with the grenades available to purchase off the nearby wall.
 * Call Of The Dead - In the abandoned second floor of the multi-story building that branches off of the lighthouse.
 * Shangri-La - Will spawn randomly in the mines. (changes spawn with Stamin-Up, Double Tap and Deadshot Daiquiri).
 * Moon - Spawns on the far right side in the Bio-Dome near the Mystery Box spawn.
 * Die Rise -  Is an Easter egg in the first elevator shaft from spawn room.
 * Mob of the Dead - Found on a small boat with the perk a cola Mule Kick near the dock area as an Easter egg.
 * Cell Block - Found in the corner of the library, in the same location as the Olympia. Next to the spawn room in Mob of the Dead

Appearance
The PhD Flopper machine is very thin, and is covered in blood. It has a yellow paint job (which later changes to purple) on the front of the machine, there are 4 levers, from up to down, coloured red, green, white and purple. Under them, a bottle dispenser with a coffee cup in it can be seen. Under that, the words "Flopper PhD" can also be seen. On the top of the machine, the PhD Flopper shield can be seen, with several rods with yellow spheres stick out of it.

Trivia

 * PhD Flopper can negate the electric effects on the Wunderwaffe DG-2 in Call of the Dead, although this weapon isn't a explosive weapon.
 * Diving on top of zombies or a teammate with PhD Flopper will negate its explosion effect.
 * The Perk-a-Cola's name is a parody of the popular soft drink.
 * PhD Flopper is made from prunes and chemicals.
 * The drink has some prunes that are not a liquid, but in chunks, with some characters complaining about "eating" the drink.
 * PhD Flopper and Deadshot Daiquiri are the only the Perk-a-Cola machines with jingles that directly mention the zombies.
 * The perk allows the player to overcook a grenade without dying.
 * In Call of the Dead and Shangri-La, the color scheme has been slightly changed for the Perk-a-Cola machine.
 * One can see an empty Styrofoam cup in the deposit of the machine.
 * PhD Flopper will not protect players from the explosions caused by Napalm Zombies.
 * PhD Flopper is widely viewed as one of the best perks in terms of protection, second only to Juggernog.
 * In Call of the Dead and Shangri-La, the color scheme has been slightly changed for the Perk-a-Cola machine.
 * One can see an empty Styrofoam cup in the deposit of the machine.
 * PhD Flopper will not protect players from the explosions caused by Napalm Zombies.
 * PhD Flopper is widely viewed as one of the best perks in terms of protection, second only to Juggernog.
 * In Moon, diving to prone will not trigger the explosion in low gravity areas as the explosion is made when diving to prone from a height that would hurt the player and there is no fall damage in low gravity areas.
 * PhD Flopper has the longest jingle out of all the Perk-a-Colas.
 * This perk in the Russian version is "Доктор бумс" ("Doctor Booms").
 * Even though the player needs to dive to prone to initiate the explosive effect of the perk, one exception to this is when the player goes prone on the Flinger and is flung to the other side, which activates the explosion upon landing.
 * Similarly, in Buried, a player that goes to prone on a Trample Steam will be flung and will create the explosion where they land.
 * The PhD Flopper's jingle is in the style of Funk.
 * Cell Block is the only Call of Duty: Black Ops II map to date where PhD Flopper can be obtained from the machine.
 * Its machine model looks different in Call of Duty: Black Ops II, it has a faint glow, whereas in Call of Duty: Black Ops, it is non-luminescent.
 * In Call of Duty Black Ops II, the bottles for PhD Flopper and Deadshot Daiquiri retain their older Call of Duty: Black Ops model but not featuring the Perk-a-Colas' logo around the neck of the bottle.
 * When PhD Flopper is bought in Cell Block, a phasing variant of its jingle can be heard. It sounds similar to the line "PhD" being sung by the background singers.This can be heard with the other perks around the map. With different variations depending on their jingles.