Rouge seemingly possesses a locket belonging to Bokkun, Eggman's messenger robot. She joins the good side and declared war on Eggman after Christopher Thorndyke was sent to Earth. She battled against the Metarex in Season 3 with Doctor Eggman and released Shadow. In Season 2, she is one of G.U.N.'s top agents. While Rouge said goodbye to Topaz, Topaz had a tear in her eye, remembering all the good times they had. At the end of the season in which Topaz and Rouge met, Rouge and the others were transported home.

It wasn't until after a few episodes that Rouge and Topaz actually became close friends. Rouge the Bat does have allies, such as Shadow the Hedgehog and Topaz from G.U.N. She would often switch sides with either the good or bad to confuse them. Rouge the Bat is very secretive about everything and very little has actually ever been disclosed about her. Rouge actually has a crush on Knuckles the Echidna, but refuses to admit it.

Her figure, speech, and behavior masks her true identity. Her policy though is that duty comes first, but she has a big interest in jewels. Her voluptuous and daring attitude turns any man's head. Rouge the Bat is a very beautiful and world-famous treasure hunter. She was later voiced by Kathleen Delaney from 2005 to 2010, such as in the games Shadow the Hedgehog and Sonic Rivals 2, as well as in the English dub of Sonic X, and she is currently voiced by Karen Strassman since 2010. In English, she was originally voiced by Lani Manella in Sonic Adventure 2, who also voiced Omochao in the same game, from 2001 to 2004.

In Japanese, she is voiced by Rumi Ochiai. Despite this, she appears more as an anti-hero in recent games as she is usually shown to put aside her jewel-stealing obsession and assist in the greater good if need be, such as helping the resistance overthrow Eggman's rule in Sonic Forces. After Sonic Adventure 2, her acts and role as a villain are mainly like Knuckles before her by stealing herself as many jewels around the Sonic universe (including Knuckles's Master Emerald) and make herself rich, even if it means working with Dr. She originally appeared as Knuckles the Echidna's rival, as well as the secondary antagonist in Sonic Adventure 2. Rouge the Bat is a character in the Sonic the Hedgehog universe. I despise anyone who takes jewels from me. I'm Rouge the Bat, but you can call me Rouge.

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