Arnold
- Primary work
- Diamond is Unbreakable
Other recorded work links
Arnold (アーノルド, Ānorudo) is a tertiary ally featured in the fourth part of the JoJo's Bizarre Adventure series, Diamond is Unbreakable.
Arnold is Reimi Sugimoto 's dog and, like her, is a Ghost residing in Morioh 's Ghost Girl's Alley. As another victim of Yoshikage Kira, he remains by Reimi's side awaiting the day their killer is brought to justice.

Image attribution details
Arnold. Source illustration via JoJoWiki; copyright remains with the original rights holders.
Image via JoJoWiki. Original franchise/production rights holders retain copyright; the wiki text CC BY-SA license does not license this image.
Original image ↗ · Archived image ↗01Basic information
02Appearance
Arnold is a large dog with light fur, seemingly of the Labrador retriever breed.↗
03Personality
As a guard dog, Arnold is strong and fierce to his enemies. However, he is friendly to strangers, as he didn't attack Rohan and Koichi when they stumbled into the alley. Loyal to his master, he remains by Reimi's side even in the afterlife.↗
04Story
SPOILERS
Background
Arnold was Reimi's guard dog 16 years prior to Diamond is Unbreakable. One night, Yoshikage Kira invaded their house and slashed his throat. Picking up the dog's dead body, Kira hanged him on the clothes hook in the wall, his neck almost cut off. His blood remained dripping for more than 10 minutes before anyone noticed his death.↗↗
Diamond is Unbreakable
Reimi and Arnold finally find someone with a supernatural ability who can see them: Koichi Hirose and Rohan Kishibe. After hearing their story, they agree to help after learning the killer is still alive, and they warn the Stand users of Morioh. Arnold remains by Reimi's side as she bides her time in the alley.↗
When Kira dies, his soul is transported to the ghost alley. When he attacks Reimi, Arnold defends her by biting Kira's arm off, causing him to look back and be dragged into the afterlife by hundreds of hands. Finally at peace, the ghost alley disappears, and both Arnold and Reimi ascend to Heaven.↗↗
05Plot details
SPOILERS
Appearance
As a ghost, he has a huge gash across his throat from when he was killed by Kira that constantly drips blood.↗
Profile details
Status Status based on their final appearance in the part(s) they are featured in: Deceased (Part 4)↗
Date of Death: August 13, 1983↗↗
Cause of Death: Throat slashed by Yoshikage Kira↗
06Appearances
07Relationships
| Character | Relationship | Notes |
|---|---|---|
| Reimi Sugimoto | Master | ↗ |
08Sources & attribution
- Arnold
09More profiles to explore
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