Guilmon

ギルモン

Guilmon is a curious and naive Digimon, the youngest among the partner Digimon. He was created from Takato's imagination and brought to life by the Blue Card. Initially, Guilmon was unaware of the differences between humans and Digimon, referring to his partner Tamer as "Takatomon".
Guilmon is typically playful and friendly, which made him quite popular with Takato's classmates as a real live Digimon. Although portrayed as childlike, Guilmon occasionally demonstrates deep insight. For instance, when Takato refused to let Guilmon digivolve, fearing that Guilmon would cease to be the same, Guilmon noted that Takato had also changed over time, yet remained the same person.
Guilmon shares one of the deepest relationships with his Tamer in the entire series; the two undertook many activities together and overcame numerous obstacles. Guilmon is highly loyal and protective of Takato, willing to do anything for him. When Guilmon dark-digivolved into Megidramon, it was their deep bond that enabled Takato to regain his senses, allowing him to rescue Guilmon and restore him. This later permitted them to biomerge into Gallantmon to battle Beezlemon.