He is voiced by Laura Summer also voices Patamon in Digimon Adventure series and returned to reprise her role in Digimon Adventure tri..
While he normally appears to be harmless and cute, it is notable that when in danger Tokomon will open his mouth, which reveals layers of huge shark-like fangs. However, he is never seen using these fangs so it is likely they are just used as a scare tactic.
Dark Masters attack the facility where he is housed, and Gennai flees with the eggs in hand. He is taken to File Island, where he hatches into Poyomon who eventually digivolves into Tokomon. During this time, he plays with the other Digimon as he holds the Digivice that belongs to T.K., waiting for his partner's arrival.
T.K. first meets Tokomon immediately upon his arrival into the Digital World, and the two formed a strong bond very quickly. Tokomon later digivolves into Patamon when the DigiDestined children were in danger from Kuwagamon. When Patamon is reconfigured after the battle with Devimon, he hatches as Poyomon and digivolves to this form again in the Koromon Village.
Digimon Adventure 02
When Patamon becomes really weak, such as after a DNA Digivolution, he is most likely to revert to this form.
Digimon Adventure tri.
After the reboot, Tokomon and the other DigiDestined Digimon are reverted to their In-Training forms with their memories erased. Tokomon playing whistle (that belong to Kari).