Bingo.
(SO3 spoilers)
1. Biwig has captured Dr. Leingod and Sophia, and uses them as a bargaining chip in exchange for Fayt.
2. Biwig kills Dr. Leingod with a blaster.
3. This one was mean because Biwig's battle form fails so much that I doubt anyone would remember his elemental weakness. On the other hand, the last word of the clue was a tip of the hat to his aftergame boss form - Frenzied Biwig.
4. His battle theme is probably the most memorable thing about him.
Your go, Tal.