In Sonic RPG 3, Sonic and Nights meet Reala and Nights ends up fighting him in the first battle. Sonic flies into the castle to find Shadow and meets Seekladoom. Shadow also returns and Sonic and Shadow fight Seekladoom in the tower. Just attack Seekladoom, he will steal your MP and do his super attack which pwns you but leaves him weakened.

Nights uses the power of the emerald to revive Sonic and Shadow. However, they don’t kill Seekladoom for some odd reason(didn’t make sense to me). They say they need a plan.

Nights meanwhile, engages in battle with Reala. Just use your star rain on him until he attacks you twice and then use your overdrive to win. Reala is saved by Seekladoom chasing Sonic, Shadow, and Reala. Seekladoom doesn’t kill Reala because he might have some future use for him.

Sonic and friends wind up in a cave and there engage in battle with ancient beasts. The story continues in the next chapter.