Alpha Gaiden: Ragnarok time! The real fight with Aurgelmir was a joke compared to the WAVE OF BERGELMIRS level. Yeah, four bosses with full sets of spirit triggers in one fight, and no enemies below 22,000 HP! Fun times.
Party is:
Mazinkaiser: Unholy damage dealer and almost as good a tank. Equipped with the Soul of Steel and an HPHGCP because Fire Blasters every turn are sick and wrong (16,000 on a crit? In a game where enemy HP is capped at 65,000? Yes, please.)
Shin Getter 1: Not as good a tank or damage-dealer as Kaiser (Stoner Sunshine is the same power is Fire Blaster, but Getter has no Mazin Power and a B on land for all Ryouma's attacks), but still plenty destructive and can throw out Valored attacks from now to doomsday. Also has an HPHGCP, because otherwise it would be stuck with Getter Beam as its best every-turn damage instead of Stoner Sunshine. Can't have that, can we?
Voltes V and Combattler V: Basically the same robot twice. Five spirit sets including Rouse, decent finishers. Not much for damage until they get those finishers unlocked, but they've got utility.
Raideen: Owner of the third HPHGCP, for great God Voice spam. Was the best boss-killer in the team until the upgraded Dynamics showed up, and still holds its own with them.
Daitarn 3: Tanks and uses Souled Sun Attacks. Pretty one-dimensional, but it's a fun dimension.
Thrudgelmir: NEVER DIES. 1800 base armor, 12,000 HP, HP Regen Large...damn. It's pretty weak on damage for a Sanger mech, but it would be an almighty god of grunt-slaying if there were any grunts left in the game when it joins.
Great Mazinger: Smashes stuff. Was pretty awesome earlier, is now in the Daitarn category of good damage but middle-of-the-road overall.
Brygar: Choudenji Brothers Lite for spirits, but trumps them for damage. Works for me.
Zeta Gundam: High Mega Launcher for range and counterattacks, Waverider Assault for smiting up close, and doesn't get hit by anything. Best real in the game.
V2 Assault Buster Gundam: Second-best real in the game. With a Generator it can throw out essentially infinite VSBRs and Wings(es) of Light, and the Long Range Cannon is surprisingly excellent damage backed with Soul. Also, Haro has Rouse, always a plus.
Gundam Double X: G-Bits smash things up, and with the G-Falcon it can use Satellite Cannon for no EN cost every other turn. Tifa's excellent support set is icing on the cake.
R-3 Powered: Aya has Replen and Rouse, both of which are integral to starting quickly and sustaining a beatdown.
Nors Rei: Heals, dodges okay, and has Rouse.
White Ark: Heals, tanks surprisingly well for a healer, and has Rouse.
Venus A: Heals, tanks okay when loaded with Alloy Z, and has Rouse yet again. What can I say, I like starting a fight with my entire team at 130 Will or higher.
Shining Force Feather: It's...Valkyrie Profile. How odd.