Saiki Kusuke/Inventions

Control Device (Limiters)

 * Limiter.jpg devices are used to take control of Kusuo's psychic powers (left side device) and initially had the intent to reveal his abilities to the entire world if removed (right side device.) The devices were first made by Kusuke when Kusuo was still a 5th grade student. It's original shape would be an antennae but it is referred as a "hairpin" due to Kusuo's hypnotic powers. When the left side device is removed, Kusuo's full psychic power goes out of control and multiplies by the amount of time his powers were limited. When the control device is reinstalled, it would take time before his powers stabilizes. The control devices cannot stop the growth of Kusuo's power. The right side device function to reveal to the world was removed by Kusuke at some point in the past without informing Kusuo about it.

Control Device (Limiters) Ver. II

 * Sometime during the series' run, Kusuke invented a 2nd version of the control device that he was certain will remove Kusuo's abilities once and for all. It is structured and colored almost like version I, excluding the top which is shaped as feces. It's function is to completely destroy a section of Kusuo's brain, which activates when he uses his abilities. Kusuo ends up using it, initially a success, however proves to be a failure once Kusuo's abilities did eventually return.

Kusuke No.1

 * A simple robot that Kusuke made sometime in his childhood. It is controlled by a remote, which he uses to impress Kuniharu. It was later destroyed by a young Kusuo using his own robot which he made out of Pocky box and a couple of sticks.

Telepath Canceller

 * Telepathy Canceler.jpg device has the capability to disable the telepathy of Kusuo, preventing the latter from reading his thoughts and from him hearing Kusuo. It's appearance is similar to that of Kusuo's control device minus the other antennae which it holds only one. This device ended Kusuke's research on telepathy.

Time Machine

 * The device that is capable of going to and from the past and the future. It was first introduced in one of the parallel world in the series, "The Modified 2014" where the future Kusuke explains how he created the time machine personally just to revive Kusuo who had died that year. It was revealed by Reita that Kusuke was the reason for the World War 3 but Kusuke explains he just indirectly did it when people fought for the time machine he invented.

K-Watch

 * Another device that was introduced in "The Modified 2014". It has the feature of displaying hologram image in the air.

Power Suit

 * These suits can be used by the elderly to greatly enhance their mobility. It is most notably used by Kumagoro, and was eventually revealed to have actually been created by Kusuke with the intention of defeating Kusuo.

Warp
Related article: Warp
 * A robot cat with the ability to act like a perfect living cat and has cognitive as well as various features. Kusuke mentioned that it was for the 22nd wedding anniversary of his parents but implicitly for his mother who has an allergy for cats.

KusuΩ

 * (Pronounced as Kusuomega) A robot replica of Kusuo that looks exactly like him. It was programmed to have all of Kusuo's personality, habit, believes, and physical data. Kusuke invented it to pose as a challenge for Kusuo. Kusuo ends up destroying it, with some help from Toritsuka Reita. It costed a billion yen (roughly 10 million USD) to produce.

Unnamed Flying Machine
This unnamed device was used by Kusuke while he was playing tag with Kusuo in London. It has the appearance of a hang glider with bat like wings, and seems to be powered by wind. It has a similar appearance to Leonardo Da Vinci's hang glider designs, which may be what this invention is referencing.

Jet Pack
Used by Kusuke when the Saiki family visited London, it is possible that Kusuke himself invented it.