Being usually used like a "pack mule" for labor in the Kingdom of Science, Ginro tries shirking out of any job he's given regardless of the effort needed; Kohaku and Kinro usually drag him along. During the adventure on Treasure Island, Ginro manages to convince an unpetrified warrior to serve him due to the resemblance he bears to his late master, gaining protection from his former "tormentors".
Ginro is a rather short, androgynous young man with medium-length blond hair that covers the left side of his face. Unlike his brother, he seems to take strongly after his mother in looks, having round, green eyes and soft facial features, and unlike many of the other warriors, is not very muscular. Due to these traits, he is able to convincingly pass himself off as a girl, and uses this in conjunction with a disguise to (reluctantly) join the harem selection and infiltrate the Petrification Kingdom. According to Matsukaze, he resembles his former lord, who is hinted to be a distant relative. 
Ginro wears a blue karate gi-like uniform and belt. He, like his brother Kinro, carries his spear wherever he goes.
Ginro is the coward of the two guard brothers, immediately showcased when he gets visibly more startled than Kinro by Kohaku's threats of attacking them unless they let Senku into the village. Another example being when he considered the possibility of having everyone run away from the village to avoid a fight with the Tsukasa Empire, though after Kohaku points out that only a scum bag would consider it as the elderly and children wouldn't be able to keep up, he claims he didn't think of such an idea. He can be very full of himself and is somewhat selfish, such as when he abruptly decided to try and beat Senku in the village games and take the spot of village chief. He's easily distracted by shiny things and Senku's antics, which ends with him usually working to further the scientist’s schemes.
Another aspect of his personality is that he is much more sincere in his cowardice and is rather open about his feelings, showing no hesitation to admitting to being scared of things like soap bubbles, bugs and poison gas. His sincerity is something he seems to be aware of and he finds lacking in other people, he questioned Senku and Chrome acting so fearless in what could easily be a fatal mission, which he describes as being reckless until being comforted and corrected by Kaseki, who's also shown to be open about his shortcomings. He's also tried to pass this sincerity onto his brother, suggesting early on that he should tell Kohaku about his poor vision so she wouldn't treat him so harshly about his defficiencies in fighting because of it.
There are two main sides to him: a kinder, gentler side that cares for his friends and family and a more scummy side to himself. There are times when his scummy meddling side wins over his nicer side, such as when he enters the village tournament to determine who would be village chief and wed Ruri. While he initially does so to protect Ruri from Magma, once he learns she is satisfied with marrying whoever wins, Ginro immediately decides to win so he can be chief and order people around, have ramen everyday, give everyone a harem, and be a "good chief" in his own words. The villagers are so disturbed that when he loses to Senku, they immediately cheer despite the fact they do not approve of Senku as an outsider. Similarly, when the Perseus sets sail, he refuses to board for fear of such a dangerous journey, though he pretends to swim after the ship in order to impress some girls. In addition, he tends to enjoy meddling in Chrome and Ruri's relationship. At one point, in an extra, he even suggests that he, Chrome, Kinro, and Senku attack Kohaku together to see who is stronger and claims it is "fair" since Kohaku is much stronger than all of them individually.
Ginro shows regret for his cowardice often and genuinely cares about his friends, to the point where he runs off to help Senku and Chrome in a dangerous situation where they were attempting to acquire sulfuric acid from Sulfurina, a natural sulfuric acid spring located inside a crater where highly poisonous gases accumulate. Similarly, he refuses to cut the bridge leading into the village despite knowing that doing so would block the entrance to Hyoga's forces, because his brother Kinro, who was wounded and hanging from the bridge would have to be sacrificed. Later on, when his brother faces the prospect of being petrified, Ginro manages to overcome his fear to protect his brother with help from Suika. This proves that despite having a scummy cowardly side, he will ultimately endure any tough situation to protect his friends and family. He also showed this when he received great info on the Leader of the Petrification Kingdom, after which he was badly wounded by Ibara. He was willing to accept his fate after being saved by Kohaku.
He can be somewhat lazy as he tends to slack off during his duties as a guard. He often complains when he and Kinro have to lend manpower to Senku's inventions, which physically exhaust them, and celebrated alongside Kinro when Senku built a power plant that would decrease their work.
When it comes to romantic affairs, Ginro is shown to be focusing primarily on a woman's superficial qualities, a trait his brother Kinro greatly despises. Though he's never been shown involved in any romance of his own, he ranks high in the top village hunks according to the village girls. he can get very nosy about other people's romantic affairs, aggressively inquiring while under the impression that senku was was about to discuss the type of woman he likes when he expressed some intrigue about Homura, who was spying on them. His intrusions in other people's relationships don't always lack tact or common sense however, such as when he suggested that Chrome should use the first ever telephone call in the stone world to confess his feelings to Ruri, an idea that several people seemed to back and they were visibly disappointed when Chrome didn't go forward with it. Previously he had taken the chance to quietly comfort Ruri during the village games by assuring her that Chrome was gonna win, saying he could tell she wanted him to be victorious (and therefore become her husband); this lasted a short time before his ambition took over and he attempted to win himself.
He also shows a perverted side, imagining what it would be like to marry Ruri, and also fantasizing about the "forbidden love" that would be Ruri marrying Kohaku, her sister. He showed interest in the use of an x-ray to peek under women's clothes during the contruction of the Perseus, and towards the end of the Treasure Island arc, he got himself distracted in contemplation of Kohaku's breasts while in the middle of thanking her and others for saving his life. Similarly, he enjoys showing off, particularly in front of cute girls, as he imagined himself looking cool while facing off during the village tournament, though in reality, was beaten badly before winning. He similarly swam to the Perseus to make it look like he was brave and wanted to join his friends on their dangerous journey to the outside world when, in reality, he believed he would not be able to reach the ship and would return to the island looking like a hero and getting several girls to like him.
Abilities and Skills
- Average Physical Prowess: While not as good of a warrior as Kinro, he possesses some skill. He can support up to at least Chrome's weight, as seen when he managed to keep him held up by his spear, albeit with great difficulty. He managed to defeat Argo, the physically third most powerful man in the village, though received heavy injuries in the process. He could hunt and kill large American alligators with help from the others.
- Spearmanship: Ginro appears to posses average spear skills during combat, but excels with showy flourishes and feints. Ginro is shown to be very skilled with using it as he was able to perform a spearman's dance while disguised as a woman.
- High Stamina: He has enough physical capability to match his brother in spinning the electrical generator. When receiving a barrage of hits from Argo during the village competition, Ginro is able to withstand them and even succeed in pushing him off a cliff into water and win the match, granted Argo was shocked at Ginro's very unusual endurance, which was due to him being under the effects of a concoction similar to an energy drink administered by Senku, and strong mental suggestion about its power. While disguised, Ginro was implied to be capable of storing a pineapple containing a chemical weapon on his person without affecting his movements. He survived a fatal wound from Ibara, though it was thanks to Kohaku that he survived as she made sure that they were petrified not long after.
- Spear: Originally, Ginro wielded a stone spear, which later was plated with silver to be used as a detector of the toxic fumes near the sulfuric acid lake. The spear was later replaced with a katana made of steel.
- Katana: During the raid on Ishigami Village by Hyoga and his goons, Ginro was given a katana by Kaseki and Senku.
- Ethyl Acetate: A chemical that its vapors can cause strong dizziness when inhaled. Ginro was equipped with this chemical concealed inside a pineapple (given the smell similarity to an overripe pineapple), which in turn was concealed within the bottom part of his dress while infiltrating the Petrification Kingdom disguised as a woman. It is not clear how the pineapple was fastened inside the dress, though the means appeared to be a short cord terminating in a small loop.
- His name contains the kanji for silver (銀 gin) and wolf (狼 rō) and put together mean "silver wolf", in keeping with the fact that all other members of Ishigami village have names referencing metals and crystals. His being the reference to the chemical element silver, its elemental symbol is Ag and atomic number is 47.
- Ginro's birthday is 4/7, which is the atomic number for silver (47).
- Ginro is the fifth most popular hunk amongst the villagers.
- Ginro tends to always screw up in some way; mostly due to his absentmindedness and being a chicken.
- In both times he was petrified, Ginro was severely wounded in a way and was saved by the revival process.
|Male||Alabaster • Argo • Carbo • Chrome • Ganen • Genbu • Ginro • Hagane • Jasper • Kaseki • Kinro • Kokuyo • Magma • Mantle • Natri • Sagan • Sho • Soyuz • Tetsuken • Titan • Unmo|
|Female||Alumi • Azura • Beryl • Dia • En • Garnet • Kohaku • Kujaku • Namari • Ruby • Ruri • Sango • Sapphire • Shirogane • Shovel • Suika • Suzu • Turquoise|
|Unknown||Chalk • Sagara|
|Male||Chrome • Gen Asagiri • Ginro • Hyoga • Joel Gear • Kaseki • Kinro • Kokuyo • Magma • Matsukaze • Moz • Ryusui Nanami • Sai Nanami • Senku Ishigami • Taiju Oki • Tetsuya Kinomoto • Tsukasa Shishio • Ukyo Saionji • Yo Uei|
|Female||Chelsea Childe • Homura Momiji • Kirisame • Kohaku • Minami Hokutozai • Mirai Shishio • Nikki Hanada • Ruri • Suika • Yuzuriha Ogawa|
|Unknown||Francois • American Colony • Ishigami Village|
|Alabaster • Argo • Carbo • Chrome • Ganen • Genbu • Ginro • Hagane • Jasper • Kaseki • Kinro • Kokuyo • Magma • Mantle • Natri • Sagan • Sho • Tetsuken • Titan • Unmo|
|Alumi • Azura • Beryl • Dia • En • Garnet • Kohaku • Kujaku • Namari • Ruby • Ruri • Sango • Sapphire • Shirogane • Shovel • Suika • Suzu • Turquoise|
|Soyuz's father • Ibara • Matsukaze • Moz • Oarashi • Soyuz|
|Amaryllis • Kirisame|