|Season||Bakugan: New Vestroia|
|Previous||Beta City Blues|
|Next||Underground Take Down|
Brotherly Love is the 21st episode of Bakugan: New Vestroia. It aired on September 26, 2009.
Mira is uncertain of her brother's intentions, while in Gamma City. Meanwhile, Ace is unconvinced that Mira has betrayed them due to his feelings for her, but they all resolve to head to Gamma City for the final Dimension Controller. That night, Spectra invites Mira to dinner, where he asks her to join him, because he needs her and cannot accomplish his goal without her. Mira is unsure and retires for the night. Later, she contacts Spectra asking to battle him and let that decide her fate: if Spectra wins, she will serve him, but if Mira wins, he must go back to being her brother, Keith. However, Helios has volunteered to become a Cyborg Bakugan after Professor Clay had collected data on Drago while he was in Spectra's possession. Wilda and Baliton prove to be no match for Cyborg Helios and as a result Mira loses; now, she must pay the bet, which turns herself into an enemy of the Resistance and begins showing her loyalty with the Vexos and with Spectra.
- Helios volunteers to become a cyborg using the data collected from Drago while he was in Spectra's possession.
- Helios has much of his organic body replaced with mechanical parts, evolving into Cyborg Helios.
- Ace, Shun, and Marucho learn of Mira's "betrayal".
- Spectra reveals to Mira that he plans to create the Ultimate Bakugan from Helios, then overthrow Zenoheld and Hydron.
- Mira challenges Spectra to a battle, saying she will leave the Vexos if she wins.
- Mira loses to Spectra, forcing her to remain part of the Vexos.
Bakugan Trap Seen
- When Mira uses Volcano Hammer, there is a scene where Wilda punched Helios, which was cut in the English version due to being violent for kids.