Michael and Fasalina (GxS)
In Stage 8, allow Van to defeat the axe character. In Stage 26A, allow Vann to defeat Carossa. In Stage 27, have Vann's kill count reach a certain level. In Stage 31 part 1, defeat Woo and Fasalina first, then defeat Michael. Michael and Fasalina will join after Stage 31 part 1.