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Dr. Kaminko (Japanese: カミンコ博士 Dr. Kaminko) is an eccentric scientist who lives in a run-down mansion located in western Orre and who makes his first and only appearance to date in Pokémon XD: Gale of Darkness, in which he plays a supporting role of moderate importance.
The doctor specializes in generally useless but sometimes viable inventions. One such invention is the Robo Kyogre, which takes the player to Citadark Isle after a bit of tinkering done by Makan, and which is, apparently, the only one of them to serve any useful purpose. His other inventions range from being somewhat pointless to potentially harmful, although his eager assistant Chobin idolizes Dr. Kaminko and enshrines his inventions in a video that may be watched in the foyer of the doctor's house, and despite fully knowing their ill effects. Dr. Kaminko's House possesses a foreboding atmosphere, a reflection of his lack of concern for his surroundings and, perhaps, for the well-being of those who use his inventions, many of which seem deliberately designed to lead to the ruin of the user's health or finances. His workroom is rather cluttered and his home is fairly isolated from the rest of Orre, marking him as a sort of recluse with little contact with the outside world.
When focusing on some new invention, Dr. Kaminko becomes entirely oblivious to his surroundings and the goings-on of the outside world, and appears to prefer to work alone with his ideas, for his only aide, Chobin is never actually seen to assist him in inventing anything. During the development of the Robo Groudon, he was denied access to the workroom, which was presumably also the case with the doctor's other inventions.
His house also contains Jovi's Diary, which expresses the thoughts of the player's younger sister throughout the game. Her diary also hints about a secret room in the Pokémon HQ Lab, which may refer to the one in which the Master Ball is stored.
Dr. Kaminko's inventions have been marketed throughout Orre, albeit only with limited success due to their unpractical nature and potentially-harmful side-effects, which may be observed in their users over time. Those that have bought his inventions appear to have done so without knowledge of the invention's intended use, or rather the lack thereof. A man in Agate Village who has purchased a pair of 'unhealthy sandals' did so as he was told that they were a great invention, presumably by Chobin himself, and it may be observed that his health grows progressively worse thereafter. Another man in Pyrite Town believes himself to have been conned after he bought several 'Poké Poles', which, as their name implies, are poles painted in the same color as a Poké Ball, and which have no visible purpose other than, as Chobin guesses, to spread confusion as to their purpose.
Makan is often seen at Dr. Kaminko's house, and the two are shown to be longtime friends, indicating that the doctor may not have been such a recluse in the past as he is at the present, though also showing the limited extent of his present social circle. Beluh, however, has a vastly different opinion of him, and, if the player does not reveal who he is, she will presume the player is here to market one of Dr. Kaminko's inventions and will ask that he leave, revealing that the doctor and his inventions are not well received by Orre at large, or at least by its more revered denizens. Beluh also initiates a sidequest in which the player must remove a set of faulty translators invented by Dr. Kaminko which render their wearers mute instead, further revealing her already-evident dislike of him.
Despite his scatterbrained demeanor, Dr. Kaminko is actually aware and possibly proud of the fact that his inventions are often useless. After the apparent "failure" of the Robo Groudon, Michael can find the doctor musing in his study, asking himself if he should give up "tricking people" with his creations, and wondering if he needs new direction in his life (before conceiving and shortly thereafter dismissing the idea of Robo Trainers). However, after Greevil is defeated, Dr. Kaminko is once again back to his old ways, exclaiming that the Robo Pokémon are "the ultimate" and that one "is playing a key role in bringing Cipher down".
- A translator that mutes Pokémon instead of translating Pokémon speech, as was their intended function. This appears to have been his only invention with a remotely worthwhile intention behind it.
- Unhealthy Sandals (Japanese: 不健康サンダル Unhealthy Sandals, also ツボツボサンダル Tsubotsubo Sandals)
- "Dr. Kaminko's inventions are number one in the world! Chobin's choice is this, tadaah! The Unhealthy Sandals! The insole is studded with lumpy nubs that fail to stimulate every pressure point in a fabulous way. Keep wearing these, and Chobin will guarantee painful feet and chronic worsening of your health. Chobin thinks it is superlative."
- This invention was purchased by a man in Agate Village who wonders at its efficacy.
- Power-Draining Light Bulb (Japanese: 大食い電球 Gluttonous Light Bulb)
- "Dr. Kaminko's inventions are number one in the world! Chobin's choice is this, tadaah! The Power-Draining Light Bulb! At first glance, it's an ordinary sort of plain light bulb, but it positively gulps electricity at ten times the usual rate. Keep using this, and the electricity bills will grow shockingly! And, it won't be easy to find out why! Chobin thinks it is dazzling."
- Jet Vacuum Cleaner (Japanese: 強力ジェット掃除機 Powerful Jet Vacuum Cleaner)
- "Dr. Kaminko's inventions are number one in the world! Chobin's choice is this, tadaah! The superpowered Jet Vacuum Cleaner! Whatever it sucks up, it blows out the rear using powerful jet propulsion that shreds dust into fine particles. The more you vacuum, the more your rooms get covered in an invisible coat of dust from corner to corner! Chobin thinks this is splendorous!"
- Power-Saving Refrigerator (Japanese: 節電冷蔵庫 Power-Saving Refrigerator)
- "Dr. Kaminko's inventions are number one in the world! Chobin's choice is this, tadaah! The Power-Saving Refrigerator! If the purpose is to conserve power, you won't be making a mistake with this refrigerator! It's truly one of a kind! It's an ultra-energy saver that usually stays off. It only turns on when its sensor detects someone in front of it. Food goes bad right away, but no one knows why because the fridge is on when the door is opened! Chobin thinks this is splendid!"
- Time-Cut Recorder (Japanese: 短縮レコーダー Shortening Recorder)
- "Dr. Kaminko's inventions are number one in the world! Chobin's choice is this, tadaah! The Time-Cut Recorder! It works with your video deck! When you're recording a TV program, this device ends the recording five minutes early! If you recorded a movie, you'll be at the best part at the end when suddenly the screen goes blank! Chobin thinks this is astonishing!"
- Discount Calendar (Japanese: 短めカレンダー Short Calendar)
- "Dr. Kaminko's inventions are number one in the world! Chobin's choice is this, tadaah! The Discount Calendar! It will amaze you! It only has 300 days in a year! Anyone using this will lose 65 days a year! Chobin thinks this is astounding!"
- Poké Pole (Japanese: モンスターポール Monster Pole)
- "Dr. Kaminko's inventions are number one in the world! Chobin's choice is this, tadaah! The Poké Pole! It's not a ball, it's a pole! Just like a Poké Ball, it's painted red and white, but it's just a pole! People will confuse it with a Poké Ball? Society will be engulfed in chaos? Chobin thinks this is magnificent!"
- This invention was sold to the old man in Pyrite Town's Poké Mart. The old man tells the player that he believes that he has been conned after realizing its uselessness.
- In Japanese, the ポ po in pole and the ボ bo in ball appear and sound very similar.
- Haunted Radio (Japanese: 幽霊ラジオ Ghost Radio)
- "Dr. Kaminko's inventions are number one in the world! Chobin's choice is this, tadaah! The Haunted Radio! It works just like an ordinary radio. That is until two in the morning... If you listen very closely, you can hear a tiny voice... "Please help meeeeeeeee." Maybe Dr. Kaminko just put in an odd program to do that. He denies it, but he must have done it absentmindedly. He must have. Chobin thinks this is frightfully excellent!"
- This is the only invention that Chobin has figured out, though it doesn't seem to have any useful purpose.
Dr. Kaminko's basement is full of items and interesting objects. In the center is a generator with no other purpose than to show how Dr. Kaminko gets his power and energy. When entered from the left of his house, there are multiple isolated platforms suspended from the ceiling. In addition to that, the player may grab hold of ropes on the platforms and be mechanically carried to another one. On the platforms, to signify that a method of transportation is available, colored circles mark the "ports" from which one can travel to and from. The player may only be lifted by the ropes if a rope with a hook at the end is dangling in front of the circle to its correspondingly colored circle. This allows access to all platforms with a little bit of creativity. On the platforms are items such as Full Restores and Potions. Most notably is Jovi's Diary, which very subtly implies where the Master Ball is located.
If the basement is accessed from the right side of the house, the player can enter an elevator to arrive below the suspended platforms. There are items there, as well. There are an abundance of scrapped and unsold inventions.
- Dr. Kaminko's inventions resemble chindōgu, the Japanese art of inventing every day gadgets that seem to solve a problem but in actual fact cause more problems or social embarrassment.
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