Raiden was Teppō's owned brave and strong bear dog.
Bear Hunter Fubuki-gō
Teppō had trained his dog fearless and ate it without hesitation even bear meat. Jūzaburō tried to warn Teppō saying that the hunting dog should learn cautious, but Teppō did not listen.
When the hunters were chasing big bears, Raiden and Fubuki drove to the cliff face. Fubuki funds in a bear attacks, but fearless Raiden went to catch the bear's leg and could not look out for when the Bear killed him by crushing his head under his paw.