|“||You are much more cowardly than a normal person and easily give in under pressure, but when push comes to shove you can be quite courageous.||„|
|~ Rohan Kishibe describing Koichi|
Koichi Hirose is a major character in JoJo's Bizarre Adventure Part IV: Diamond is Unbreakable. He is a high-school freshman that, while involuntarily, gets involved in the bizarre happenings in Morioh with Josuke Higashikata and Jotaro Kujo. He eventually becomes a huge part in tracking down serial killer Yoshikage Kira.
Power and Stats
Tier: 10-B. 10-C with ACT1 | Varies with ACT2 | Unknown with ACT3
Name: Koichi Hirose
Origin: JoJo's Bizarre Adventure (Part IV: Diamond is Unbreakable)
Age: 15 in Part IV. 17 in Part V.
Classification: Human, Stand User, Student
Attack Potency: Human level. Below Average Human level with ACT1 (Tamami Kobayashi remarked on how its attacks don't hurt) | Varies with ACT2 (Any phrases or kanji made by Koichi could yield many possible results when activated.) | Unknown with ACT3 (Its ability doesn't require it to use any known physical prowess)
Speed: Peak Human with Massively FTL reactions. Normal Human with ACT1 (Tamami Kobayashi remarked how even he could dodge its attacks). | Subsonic with ACT2 (Can move at speeds faster than the eye). | Massively FTL with ACT3 (Tagged Black Sabbath before it stabbed Giorno, which was stated to be faster than Gold Experience).
Lifting Strength: Likely Peak Human. Unknown with Echoes
Striking Strength: Human Class. Human Class with ACT1 | Unknown | Unknown
Durability: Wall level (Survived being elbowed and shot through a metal door). Unknown with ACT1 | Wall level with ACT2 (Was being damaged by Yukako's Love Deluxe) | City Block level+ with ACT3 (Took hits from Killer Queen and got back up)
Stamina: Superhuman, can last a few minutes after being punched through the gut by Killer Queen.
Range: 50 meters with ACT1 | 50 meters with ACT2 | 5 meters with ACT3
Standard Equipment: Echoes ACTs 1-3
Intelligence: Above Average
Weaknesses: ACT1 can be broken by someone with enough willpower. ACT2 and ACT3 can only put down one kana at a time. Echoes 3 Freeze lasts only if the target remains within 5 meters of ACT3. Any damage done to either ACTs will reflect back onto Koichi.
- Echoes: Koichi's Stand. Rare among Stands, Echoes has three distinct forms called "ACT"s that he may call upon alternatively. ACT1 is a small, reptilian-like Stand with a large head, small arms, long tails, and wheels as "legs". ACT2 is somewhat the same, but it has a small body with legs, and a longer tail. ACT3 is completely different, being a short, green-and-white humanoid Stand with vulgar vocabulary.
- Sound Maker: Echoes ACT1 can write a sound effect in Katakana on anything, from human flesh to the ground, and have that sound repeat itself over and over with increasing volume. Echoes can shoot sound effects from both its tail and hands. This ability seems to allow it to also transfer words
- Sound Maker (ACT2): Echoes' second form increases its sound abilities beyond its first form's capabilities. When the kana is written on an object, touching it activates the effect of the sound (ex. if the sound word hyoo ("whoosh") is written, it creates a gust of wind with increasing force)
- Echoes 3 Freeze: ACT3 rapidly punches its target before attributing a "freezing" or stopping effect by greatly increasing their effective weight by around 40 - 50 kilograms (100 - 105 lbs.). This works when ACT3 rhymes "Three" with "Freeze", thought it's not explained very well.
Key: ACT1 | ACT2 | ACT3