Betamon

Betamon (ベタモン)
A quadrupedal Amphibian Digimon. Although Betamon has a gentle, docile personality, once it is angered, it emits its "Dengeki Biririn" from its body, generating more than 1 MV of electricity to strike the opponent.

Etymology
Beta: possibly short for betabeta (ベタベタ) which means sticky, or betanko (ベタンコ) which means squashed.