MegaMan NT Warrior - Season 3 - Eps 8: Calling on Colonel!
Lan and Chaud are led to Netopia to investigate a strange virus disturbance near a research center. There, strange holographic visions of the past appear, and viruses previously believed to be extinct attack in the real world. MegaMan and ProtoMan are also attacked, but they're rescued by a NetNavi named Colonel. After the incident, Chaud receives the Crest of Duo, and he decides to continue investigation in Netopia while Lan returns home.
About MegaMan NT Warrior

Title: MegaMan NT Warrior
First Air Date: 2002-03-04
Last Air Date: 2006-09-30
Status: Ended
Rating: 7.825/10 (from 20 votes)
Language: JA
Seasons: 5
Total Episodes: 209
Network: TV Tokyo
Genres: Action & Adventure, Animation, Sci-Fi & Fantasy
Production Companies: XEBEC, Shogakukan-Shueisha Productions, NAS, TV Tokyo
Synopsis
In the year 20XX, a young boy named Netto Hikari receives a very special gift as he enters the 5th grade: his very own customized Net Navi, Rockman.
Cast

Kumiko Higa
Lan Hikari (voice)

Akiko Kimura
Rockman.EXE (voice)

Yuji Ueda
Higsby / NumberMan.EXE (voice)

Kaori Mizuhashi
Mayl Sakurai (voice)

Masako Jō
Roll.EXE (voice)