Siegfried (or Zeke/ジーク)is a wild Siberian Tiger that is blue and has a lightning sign at his forehead. He is Leo's teacher. He also has a son named Siegfried Jr. in Greater Animal Kaiser.
- Ultra Rare
- Number: A-061
- Data: Length 3,0ft, Weight 8,0lb
- Food: ???
- Nickname: Thunder of the Blue Skies jp., The Blue Lighting eng.
Scientific Name: Panthera Tigris Altaica
Another picture of Siegfried.
- Strength:8000
- Health:7000
- Type: Speed
- Gut Move(G): Thunder Edge
- Tech Move ( Best Attack): Split Blaster
- Power Move(P): Lightning Shot
- Available in Version: 3 as Boss Animal in Japanese and Version 4 in English,Ultra Rare in subsequent releases, Version 9 as Ninja Trained Siegfried; bronze in Animal Kaiser: Beast Chronicles;and normal as Promotion Card, Fake Siegfried.