Dr. Kawashima

Dr. Kawashima
Official artwork of Dr. Kawashima from Brain Age: Concentration Training.
Universe	Brain Age
Debut	Brain Age: Train Your Brain in Minutes a Day! (2005)
Smash Bros. appearances	SSB4 Ultimate
Most recent non-Smash appearance	Dr Kawashima's Brain Training for Nintendo Switch (2019)
Console/platform of origin	Nintendo DS
Species	Human
Gender	Male
Article on Wikipedia	Ryuta Kawashima

Dr. Kawashima (川島教授, Professor Kawashima) is the host of the Brain Age series. He appears in Super Smash Bros. 4 as an Assist Trophy.

Origin

Dr. Kawashima explaining the math exercise in Brain Age: Train Your Brain in Minutes a Day!

Ryuta Kawashima (川島 隆太, Kawashima Ryuta) is a real-world neuroscientist from Chiba City, Japan, who is known for his studies on the mapping of the various regions of the human brain and the effects of age on one's ability to learn. His most well-known work is a book entitled Train Your Brain: 60 Days to a Better Brain, which claimed that continued activities that stimulate the brain, such as basic mathematics and reading aloud, could be used to stave off the mental effects of aging. The book became a success, particularly in Japan, and his work was later adapted as a video game series by Nintendo, entitled Brain Age. In the games, Dr. Kawashima appears as a polygonal head, acting as a trainer for the player.

In Super Smash Bros. Brawl

Dr. Kawashima is mentioned by name in the PAL version of Brawl in the title of the music track "Dr Kawashima's Brain Training: How Old Is Your Brain?", referred to as "Brain Age: Train Your Brain in Minutes a Day" in the NTSC version. This is to maintain consistency with the PAL region title of the Brain Age series, in which Dr. Kawashima is named.

In Super Smash Bros. 4

As an Assist Trophy

Dr. Kawashima's initial reveal picture.

Dr. Kawashima appears as an Assist Trophy. When released, he floats away off the top of the screen. Once gone, large numbers from 1 to 9 will fly vertically and horizontally across the screen at random. The numbers do not naturally hurt fighters, but they can be attacked to launch them faster or to redirect them which can cause them to hit with fighters. If two numbers collide, they will be added together into a single number: if the result is 10 or more, the new number will then explode after a short delay; if exactly 10, it will create a significantly larger explosion similar to the Smart Bomb; if less than 10, the number will continue moving.

Dr. Kawashima and his number are active for 750 frames (12.5 seconds) starting from when he first appears. He rises from his spawn position at a speed of 1.4 units per frame (u/f). Numbers will appear within the middle 60% width and 70% height of the stage's camera bounds—Temple for example has a width of 580 units so numbers will appear in the middle 348 units, which falls between the entry platform on the left and the double platforms on the right. A maximum of four numbers can be on screen at a time and they spawn 25 frames (0.41667 seconds) apart from each other. When spawning a vertically moving number there is a 95% chance it will come from the top of the screen and 5% chance from the bottom. Each number moves at a proportion of 3.5 u/f horizontally and 2.5 u/f vertically, with 1 moving at 20%, 2 at 25%, 3 at 30% and so on until 8 at 60% and 9 at 70%.

Numbers will merge if they are within 14 units of each other. If the resulting number is less than 10, it will pause for 60 frames (1 second) before moving again. If the resulting number is greater than or equal to 10, it will pause for 70 frames (1.1667 seconds) before exploding. A 10 explosion alternates between 1% and 2% damage before finishing with 13% and reaches a max radius of 52 units. A >10 explosion always deals 13% and has a radius of $15+(n-10)$, where $n$ is the number's value. When hit a number's speed will be set to $0.25d$ u/f (where $d$ is damage it took) and will have an active hitbox that deals $6+0.5v$ damage (where $v$ is its speed).

Dr. Kawashima has a spawn chance of 38/1254. He can be summoned on all stages in a standard versus match.

Trophy

In the Wii U version, Dr. Kawashima's trophy is a Challenge reward, unlocked by clearing Classic Mode without losing any lives.

Dr. Kawashima's trophy in Super Smash Bros. for Nintendo 3DS

Dr. Kawashima's trophy in Super Smash Bros. for Wii U

Dr. Kawashima

Dr. Ryuta Kawashima is the neuroscientist behind the Brain Age series. In this game, he sends numbers from 1 to 9 flying onto the screen to crash into one another. If two colliding numbers add up to 10 or more, they'll explode. If the two numbers total 10 exactly, the explosion will be even more impressive!

: Brain Age: Train Your Brain in Minutes a Day! (04/2006)

: Brain Age 2: More Training in Minutes a Day! (08/2007)

Dr Ryuta Kawashima is the neuroscientist behind the Brain Training series. In this game, he sends numbers from 1 to 9 flying onto the screen to crash into one another. If two colliding numbers add up to 10 or more, they'll explode. If the two numbers total 10 exactly, the explosion will be even more impressive!

: Dr Kawashima's Brain Training (06/2006)

: More Brain Training from Dr Kawashima (06/2007)

In Super Smash Bros. Ultimate

As an Assist Trophy

Dr. Kawashima reprises his Assist Trophy role from Smash 4, functioning about the same. One notable change is that his appearance changes the background of the stage to a white, graphed background.

Dr. Kawashima has a spawn chance of 38/2086. He cannot be summoned on the following stages in a standard versus match (applies to only the base form unless noted otherwise):

• Boxing Ring (all)
• Castle Siege
• Coliseum
• Frigate Orpheon
• Green Greens
• Hollow Bastion (all)
• King of Fighters Stadium
• Kongo Falls (all)
• Lylat Cruise
• Midgar
• Moray Towers (all)
• New Pork City
• Princess Peach's Castle
• Prism Tower
• Tortimer Island (all)
• Town and City
• WarioWare, Inc.

Dr. Kawashima cannot be summoned if the following items are active and vice versa:

• Items: Boss Galaga and a third Dragoon part. A third Daybreak part will prevent Dr. Kawashima from appearing but Dr. Kawashima won't prevent the Daybreak part from appearing
• Poké Ball Pokémon: Palkia, Togepi, and Zoroark.
• Assist Trophies: Arcade Bunny, Ashley, Color TV-Game 15, Devil, Flies & Hand, Moon, Nightmare, Skull Kid, Squid Sisters, Thwomp, and Yuri Kozukata.

Spirits

No.	Image	Name	Type	Class	Slots	Base	Max	Base	Max	Base	Max	Ability	Series
1,214		Dr. Kawashima		★★	2	1784	7163	874	3510	910	3653	Can Be Enhanced at Lv. 99	Brain Age: Train Your Brain in Minutes a Day! Series Dr. Kawashima's Brain Training: How Old Is Your Brain? Series
1,215		Dr. Kawashima (Concentration Training) Dr. Kawashima (Devilish Brain Training)		★★★★	2	4633	11582	2050	5125	2050	5125	Unflinching Charged Smashes	Brain Age: Train Your Brain in Minutes a Day! Series Dr. Kawashima's Brain Training: How Old Is Your Brain? Series

Gallery

• 

  Challenge board unlock image.

• 

  Dr. Kawashima in Ultimate.

• 

  Photograph of Dr. Ryuta Kawashima.

Names in other languages

Language	Name
Japanese	川島教授, Professor Kawashima
English	Dr. Kawashima
French (PAL)	Dr. Kawashima
French (NTSC)	Professeur Kawashima
German	Dr. Kawashima
Spanish	Dr. Kawashima
Italian	Dr. Kawashima
Chinese (Simplified)	川岛博士, Dr. Kawashima
Chinese (Traditional)	川島博士, Dr. Kawashima
Korean	카와시마 박사, Doctor Kawashima
Dutch	Dr. Kawashima
Russian	Дoктop Кавасима

Trivia

• When using spirits, the number's base damage of 6% is increased based on the summoner's stats and the player's own increased damage will cause numbers to fly faster when hit, compounding to do more damage than when only factoring in how much damage it received.
• In the Dr. Kawashima Spirit Battle, after a few seconds of his Assist Trophy effects, the background produced by the Assist Trophy will disappear, as though the effect was ending, however the numbers will continue flying indefinitely.