Well...... You don't have Konan in your arsenal, which my lineup requires. I'll post it anyway in case you're willing to spend 24000 group credits to get Konan.

Rasa, Blank, Konan

Blank, Blank, Earth Main

Blank, Blank, Gaara (either one will do)

Talents: 2, 4, 3, Either 1 or 2, 5, Chameleon

Whole idea here is that most bodies are immune to chase, and the one person (konan) not immune to chase gets stacked with shields from the start. Rasa actually has poor health despite his immunity to chase, hence him hiding behind Konan. Everybody's standard and mystery should be able to trigger the full chain, where Konan and Earth should produce enough hit combos to trigger Rasa's 20 hit combo chase.