As for Pierre. He gets really OP. He's the strongest Blue innate endgame. Has a massive evade rate, crits a lot, 1.2 stamina, good stats thanks to getting a 20% boost with his full set putting him around the highest Str characters, Is blue innate (Best color).
The obvious weaknesses of Pierre are like he starts out super weak. (As you level him he catches up but is still below average.) end game Pierre with standard equips is even really strong. Hero Set is better tho. He's good. I think if you want the Strongest party possible. It's Pierre/Glenn. (Serge doesn't count. Since he's required.) Might be Pierre/Sprigg but I kinda doubt it.
But yea. Dude sucks early on. Guile hits like a trunk with his Level 3 tech.
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Whatever...