I made a mistake on the Sinjid part, he only did the blue shot once the first time i battled him but the second time he did it 3 times to me and killed me, high level recommended.
The 4 Final Bosses are so easy, Ignition just keep hitting, omen use a stun spell when he puts dark omen spell on himself, doctor get him down to 991000 hp and use a stunning move to get him down to below 990000 and use subversion on him, sinjid use subversion on urself to dodge his 5k+ blue shot and thats the only time he does it, kick crap out of him.