Horse Info

[konamon]

INTRO AND DISCLAIMER: Tamamo Cross was a real thoroughbred stallion racehorse that competed in the JRA from 1984 to 1988. The information here are compiled trivia of Tamamo from his achievements, interviews from his team and general fan perception. This post acts as a reference for thread partners or anyone curious of the original horse the Umamusume version of Tamamo is based of.

Generally, I'm pretty open with your character 4th walling her real life equivalent, though there are topics I ask you to refrain unless we plotted before hand, those will be added a (⨯) at the end of the sentence. If you're unsure, please don't hesitate to message me!

I tried my best to sort information based on tiers. Citations are linked in the replies.


CONTENT WARNING: Poverty, human death, animal death (warned and required highlighted to be viewed)

MISC NOTE In some of the sources or old footage, he might be listed as 5 years old in 1988 instead of 4, this is because of the old system where a horse is added 1 year in their age. I list his age by his birth year instead of the old registry system.

TIER 1
Your character is from Japan or is vaguely aware of Keiba (Japanese Horse Racing)

• He was a horse from the mid-late 80s.


• He was Oguri Cap's rival and they both were known as the Gray Horse Rivalry.

TIER 2
Your character is from/grew up in the 80s, or know someone who did.

• He is considered one of the last Showa-era horses in terms of Classic Year categorization, which is when a horse reaches 3 years old.


• Him, Oguri Cap and their rivalry basically destroyed the perception that gray coat horses aren't good runners.


• It's implied he's not only the prototype for Umamusume Tamamo Cross but also for the protagonist of the manga Midori no Makiba O.


• He competed in the 1988 Japan Cup and came second after Pay the Butler (USA), though he was the number 1 favorite amongst the Japanese, viewed as the strongest horse of the time.


• His final race was during the Arima Kinen which falls during 25th December 1988, he came second to Oguri Cap and retired afterwards.


• For characters from the 80s-90s there exists a plushie of him by now-defunct company Avanti. He was one of the earliest horses to get the plushie treatment.


• For characters from the 2010s+ there's a revival plushie of him from the JRA Thoroughbred collection.


• For fun, here's an archive footage of a retired Tamamo Cross chilling in 1993.

TIER 3
Your character is a race horse fan from the 80s (regardless of country of origin) or just a somewhat dedicated keiba fan.

• He is actually the second horse dubbed White Lightning, the first one being his father CB Cross because their near identical appearance. Some publications actually call him White Lightning II or the Second Generation White Lightning.


• He's featured in the JRA Heroes poster series, and his tagline is "Wind or Light" (風が? 光が?). This tagline for him is later used for the 2012 Tenno Sho Autumn commercial featuring his historical win. (poster link)(Commercial link)


• He started his career on Turf, switched to Dirt then back to Turf.


• The first ever Tenno Sho double winner, in that sense he surpassed Symboli Rudolf.


• He is voted number 1 favorite for Kyoto Kimpai, Hanshin Daishoten, Spring Tenno Sho, Japan Cup and the Arima Kinen.


• He was part of the 1987 Generation by technicality, he was a late bloomer and his winning streak was during his 4th year.


• Early in his career, he got into a collision accident during a race that caused him to be scared of running in large packs, this influences his team create his End Closer/Chaser running style which has him running at the back and spurt to the front at the last second.


• His retirement baffled everyone including his own trainer who was against it, this is because at the time of Tamamo Cross was at the peak of his health.


• CW: Animal Death of Old Age: Died in 2003 at the age of 18, cause of death was intestinal volvulus due to colic. He has a grave you can visit in Oumai Horse Park, Hokkaido with the plaque listing all his achievements. (⨯)

TIER 4
Your character is a Tamamo Cross fan or a diehard keiba otaku.

• His pre-debut name was Nishikino Cross, as he was one of the horses born in the Nishikino Ranch that went bankrupt. (⨯)


• His name was changed to Tamamo Cross after being bought by the ranch owner's friend who owns Tamamo Ltd. They tried saving the ranch by having Tamamo compete, but by the time he was getting enough prize money, it went bankrupt. (⨯)


• Tamamo comes from Takamatsu Castle's nickname which is located in his owner's hometown


• He was said to be meek and skittish as a foal, and his naturally small body was described as "mare-like". This, his modest pedigree and gray coat are often cited the reason why many people doubted his potential.


• The reason why it's believed his pedigree is modest is because his father, CB Cross, was already an accomplished racehorse with some graded wins under his belt and considered fairly strong as far as gray coats go. There's a popular belief that if a horse is strong, the talents skip a generation and is pass onto the grandchild.


• His owner is part of the Hanshin Owner's Association.


• There were telephone card featuring photos of him, and (in)famously, some of them includes him mating and his peepee. (I am so sorry you had to read this.) (⨯)


• It's said that after the Arima Kinen, his owner remarked that he "isn't acting like the usual Tamamo Cross".


• In his retirement, his fights with Mejiro Bright was so terrifying that handlers had to separate them immediately.


• Allegedly the reason for his retirement was so that his owner, who was ill at the time, could see his off springs while Tamamo was still at his peak and fertile.


• His children includes Kanetsu Cross, My Sole Sound, Win Generale, Tamamo Support


• His bloodline is slowly fading as of 2026, he shares this fate with the Heisei Big Three. (⨯)


• One of his successors finally won a G1, Naran Huleg, active in 2018-2023. He won the 2022 Takamatsunomiya Kinen. As of 2026, he is retired and on stud duty in the Versailles Farm.

Comments

Pedigree and Race Track record

[konamon]

TAMAMO CROSS (タマモクロス)

Pedigree: CB Cross x Green Chateau
Races: 18 Wins: 9
Born: 23rd May, 1984
Years Active: 1985-1988, retired at age 4
Achievements:
- First horse to win both Autumn and Spring Tenno Sho
- Horse of the Year 1988
- 8 Winning streak from 87 to 88

06/12/1987 - G3 Naruo Kinen JRA Archive
05/01/1988 - G3 Suponichi Sho Kimpai JRA Archive
13/03/1988 - G2 Hanhin Daishoten JRA Archive
29/04/1988 - G1 Tenno Sho (Spring) JRA Archive
12/06/1988 - G1 Takarazuka Kinen JRA Archive
30/10/1988 - G1 Tenno Sho (Autumn) JRA archive, TV footage(?) (Subbed)
27/10/1988 - G1 Japan Cup JRA Archive, TV Footage (subbed)
25/12/1988 - G1 Arima Kinen JRA Archive TV footage (Subbed)