Ribitta

Ribitta, known as Midorikawa Kero (緑川ケロ) in Japan, is an announcer of the DNN station, who was first introduced in Mega Man Battle Network 2 operating a news van outside the Official Center. Her NetNavi, ToadMan, is an optional boss in that game that can be fought by talking to her.

She also appeared in Mega Man Battle Network 3 announcing the N1 Grand Prix.

Mega Man Battle Network 5
Ribitta wants to do a report on the Undernet and has her NetNavi go to End Area, but their interference results in Colonel's deletion. Feeling remorse, Ribbita tries to join Team Colonel and sends ToadMan to the UnderNet to battle MegaMan to prove it. Even though ToadMan loses, the battle was enough to convince the team to allow them to join and the two participates in their missions until Nebula's destruction.

MegaMan NT Warrior
She is seen constantly reporting the news and does commentary on every contest in the series, normally with Higsby.

Trivia

 * Ribitta has a cameo appearance in the Mega Man Gigamix story "Burning Wheel".