Daigo

Biodata

Feature	Details
Name	Daigo (大古)
Alias(es)	Ultraman Tiga / Tiga 3 32
Species/Race	Human; transforms into an Ultra Warrior 8 32
Gender	Male
Affiliation	GUTS; TPC Far East Headquarters 7 49
Occupation/Role	GUTS field operative and pilot; formerly served in the ground transport division 7 49
Status	Active 50
First Appearance	Chapter 3

Background

Daigo was chosen by Tiga, a decision he initially struggled to understand. He considered his piloting inferior to Rena's, his intellect inferior to Horii's, his combat ability inferior to Shinjoh's, and his command ability inferior to Munakata's. Zhou Hong notes that Tiga's residual combat instincts handled the first battle against Golza and Melba far more skillfully than Daigo himself would have. 3 4

After repeatedly witnessing the difference between himself and stronger fighters, Daigo began seeking out Zhou Hong's training. His persistence gradually improved both his physical conditioning and his confidence in Tiga's strength. 15 25 32

Appearance

In human form, Daigo typically wears GUTS's red-and-white uniform. He develops a noticeably more muscular build through Zhou Hong's training, including visible abdominal definition. 15 32 33

As Tiga, he is a Giant of Light capable of changing forms. His increased physical training eventually gives his transformed body more visible muscle definition as well. 3 14 32

• Uses a pumpkin-monster costume while investigating a Halloween magnetic-field incident. 33
• Pilots a motorcycle during the Shishinohana Forest operation. 37
• Is frequently left bruised and exhausted after sparring with Zhou Hong, but continues training. 15 16 25

Personality

Daigo is compassionate and places civilian safety ahead of speed or personal advantage. When telepathically summoned by the Kyrieloid leader, he deliberately slowed his approach to give civilians more evacuation time. 8

He is initially prone to self-doubt and overthinking, particularly regarding Tiga's choice of him and the purpose of fighting as an Ultra Warrior. After confronting Zhou Hong about their identities, he accepts that becoming stronger through action is more productive than remaining trapped in hesitation. 4 32

Daigo is exceptionally resilient. He survives repeated separations from his team, devastating battlefields, and harsh physical training; his teammates jokingly compare his survival ability to a cat's nine lives. 3 18

Abilities & Skills

Tiga Transformation

Daigo transforms into Tiga using the Spark Lens, becoming a Giant of Light capable of confronting kaiju and aliens directly. 8 34

• Can change forms in battle; Tiga's residual instincts previously demonstrated especially skilled form usage. 3
• Uses Power Type to increase physical force and defense against Gronge. 14
• Uses the Delacium Light Stream to destroy Gronge. 14
• Uses the Zeperion Ray to finish the Kyrieloid after Jostar defeats it. 9
• Uses the Immobilization Beam to restrain Cilombo when conventional defense proves insufficient. 34
• His energy is limited; Tiga's warning light begins flashing after prolonged combat and firefighting. 14 34

Hand-to-Hand Combat

Daigo trains extensively under Zhou Hong, who teaches him that improving his human body can also strengthen his Ultra form. 15 25 32

• Learns to absorb throws and impacts more safely through repeated sparring. 25
• Develops stronger punches and greater physical confidence as Tiga. 32 45
• Remains far below Zhou Hong in human-form combat, but persists despite repeated defeats. 15 16 25

Marksmanship

Daigo is a capable GUTS Hyper Gun user in close-quarters operations.

• Rapidly fires through obstructing furniture to strike concealed Kyrieloids inside Tsukioka's mansion. 7
• Provides covering fire against the Witch before Zhou Hong closes in. 34

Piloting and Driving

Daigo is an experienced GUTS pilot and former ground-transport operative. 23 49

• Pilots GUTS Wing 1 alongside Shinjoh during monster-response operations. 16 27
• Pilots GUTS Wing 2 for a monster-carcass hoisting mission in Qinggang County. 25
• Drives with high-speed but controlled technique during emergency responses. 8 49

Survival

Daigo repeatedly survives incidents that leave him isolated from the main team.

• Reappears safely by a river after being separated during the Golza incident. 3
• Survives the destruction caused by Ligatron's defeat and reunites with GUTS. 18

Equipment

• Spark Lens — Daigo's transformation device for becoming Tiga. 8 34
• GUTS Hyper Gun — Standard GUTS sidearm used against Kyrieloids and the Witch. 7 34
• GUTS Wing 1 — Fighter commonly piloted with Shinjoh. 16 27
• GUTS Wing 2 — Aircraft Daigo pilots during the Qinggang County hoisting operation. 25
• DeLaM Car — Ground vehicle used during the Kyrieloid emergency. 8

Relationships

• Zhou Hong / Ultraman Jostar — Trainer, fellow Ultra Warrior, and close combat partner. Zhou Hong recognizes Daigo as Tiga before Daigo confirms Zhou Hong's identity as Jostar; he encourages Daigo to train rather than dwell on doubts. 15 25 32 34
• Shinjoh — GUTS partner and friend. They investigate the Kyrieloid mansion together, train together under Zhou Hong, and regularly pilot GUTS Wing 1 as a pair. 7 15 16 27
• Rena — GUTS teammate and frequent investigation partner. She assists Daigo during the Halloween incident and becomes jealous over his past connection to Saki. 33 38 50
• Munakata — GUTS commander. Munakata coordinates closely with Daigo during field operations and recognizes his survival instincts after the Ligatron battle. 7 18
• Director Sawai — Respected superior who helped give Daigo the opportunity to join GUTS. Daigo drives Sawai during the Obiko investigation and later accompanies him on a visit to Zhou Hong's home. 23 49
• Obiko — Ally encountered during the Yanino Street investigation. Daigo helps bring Obiko into contact with Director Sawai and later calls on him for assistance against the Witch. 23 24 33 34
• Saki — A girl from Daigo's past whose presence causes friction between Daigo and Rena. 38

Story Role / Major Arcs

Golza and the Kyrieloid Conflict

Daigo survives his separation from GUTS during the Golza incident and first communicates with Zhou Hong while transformed as Tiga. 3 He later transforms to face the Kyrieloid leader, acting cautiously to protect civilians before engaging. 8 Tiga and Jostar then cooperate to defeat the Kyrieloid, with Tiga delivering the final Zeperion Ray. 9

GUTS Training and Ligatron

Seeking to improve his physical strength, Daigo and Shinjoh approach Zhou Hong for training. Zhou Hong easily defeats both men but gives Daigo a theory that human physical improvement can strengthen an Ultra Warrior. 15 16 During the Ligatron crisis, Tiga fights alongside Jostar, survives Ligatron's counterattack, and reunites with the team after the monster's destruction. 17 18

Sona Ghost and Obiko Incidents

Daigo supports missile operations against the Sona Ghost and reflects with Shinjoh on the Rookie Squad's proactive monster-hunting approach. 21 He later accompanies Sawai and Zhou Hong to meet Obiko, largely observing as Sawai peacefully resolves the demon's long-standing wish. 23 24

Training with Zhou Hong

Daigo repeatedly requests sparring sessions from Zhou Hong, enduring throws, strikes, and kicks without losing his determination. 25 He eventually confronts Zhou Hong about being Jostar; after learning the truth, Daigo asks why Tiga chose him and what an Ultra Warrior should fight for. Zhou Hong redirects him toward self-reflection and continued training. 32

Halloween and Cilombo

Daigo and Rena investigate a Halloween magnetic disturbance, where Daigo identifies the Witch's missing reflection and helps manage the frightened children after Zhou Hong attacks her. 33 He joins Zhou Hong and Obiko in tracking the Witch to her lair, then transforms into Tiga to fight Cilombo alongside Jostar. Tiga's Immobilization Beam leaves Cilombo vulnerable to Jostar's finishing assault. 34

Crow Men and Raybeak

Daigo supports Zhou Hong during the Crow Men hostage crisis, using Ultra Clean after Zhou Hong eliminates the remaining attackers. 45 Later, he pilots GUTS Wing 1 with Zhou Hong during the Raybeak emergency and helps rescue stranded sailors despite radiation exposure from the monster. 49 50

Trivia

• Daigo's repeated survival of dangerous crashes and battle zones leads Shinjoh to compare him to a cat with nine lives. 3
• After the Qinggang County monster-subjugation mission, Daigo's smell is so severe that the Rookie Squad avoids the training room for days. 26
• He enthusiastically eats multiple bowls of Obiko's soba during the Yanino Street investigation. 23