Gennai Ogasawara's Siblings are the four young puppies.
Ginga Densetsu Weed: Orion
When Gennai was just a puppy, a human threw him and his siblings into the river in a sealed bag. Gennai was rescued by Tenka and his minions but it was too late for his siblings; they were all dead.
- Some fans believe Gennai's siblings are Great Pyreneese, but nothing confirmed