Well, I just can't bend my mind enough to separate lines 3/4, or whenever I do, I can't think of the instances that you refer to.

I'm going to guess that Lines 3/4 of part 2 refer to line 4 of part 1. That would place Red XIII in the answer to part 1, which as we have seen has gotten me nowhere. I believe Hojo also named Lost Number in the Nibelheim mansion, so let's stick him in there and see where it goes.

Lifestream - the blood of the planet
Green/Black Chocobo - can climb over mountains
Dorky Face - the monster in the Mansion that does a Funny Breath attack, or any Breath-doing monster
Lost Number - can do a fair amount of spells

Red XIII can be used as a clue because his L4 limit is obtained once you defeat Lost Number, and Hojo is involved with both Red XIII and Lost Number.

Well trout, I don't really know. Nibelheim? Vincent's Waterfall?