Complete the indicated Ventara mode EX mission with the listed character to unlock the corresponding new character. A "EX" mission is available at the end of each level. Complete an EX mission to unlock the character that you fought in that particular mission. Also, some characters can unlock multiple riders or enemies.

Axe: Complete mission 3-5 as Sting.
Blue Minion: Complete mission 9-5 as Wrath.
Buzzstinger Bee: Complete mission 4-5 as Axe.
Buzzstinger Bloom: Complete mission 4-5 as Camo.
Buzzstinger Frost: Complete mission 6-5 as Spear.
Buzzstinger Hornet: Complete mission 2-5 as Sting.
Buzzstinger Wasp: Complete mission 8-5 as Thrust.
Camo: Complete mission 4-5 as Thrust.
DiSpider: Complete mission 3-5 as Onyx.
Incisor: Complete mission 3-5 as Dragon Knight.
Megazelle: Complete mission 7-5 as Spear.
Onyx: Complete mission 8-5 as Siren.
Red Minion: Complete mission 1-5 as Incisor.
Siren: Complete mission7-5 as Strike.
Spear: Complete mission 6-5 as Camo.
Sting: Complete mission 3-5 as Incisor.
Strike: Complete mission 7-5 as Torque.
Thrust: Complete mission 4-5 as Incisor.
Torque: Complete mission 4-5 as Wing Knight.
White Minion: Complete mission 9-5 as Sting.
Wrath: Complete mission 8-5 as Onyx.
Xaviax: Complete all missions in Ventara mode with all characters.
Zebraskull Bronze: Complete mission 6-5 as Siren.
Zebraskull Iron: Complete mission 2-5 as Axe.