Hardest Summon to get

[Jolts]

I've bred my Gold, now I'm breeding more . After the first, it's easier though, since you already have the Wonderful and Black to breed a second Gold, then just keep breeding Golds with other Golds.

[Brian The Pink Shark]

im surprised no-body voted for titan, it took me ages to find him

[Starcrest]

he's simple to find. he's in the ruined reactor, where wats her face is looking for that huge materia, and says something like it's just plain materia and leaves.

[Sephiroth clone]

I think KOTR is the hardest. The chocobo racing is pain. Especially all the gil you have to make to afford the greens. Even though it gets easier once you start to master the all materia.

[Jolts]

If it counts, I guess I can say Master Summon is the hardest (or most time consuming) to get. I like breeding chocobos, and I don't mind the Ancient Forest that much.

[Brian The Pink Shark]

he's simple to find. he's in the ruined reactor, where wats her face is looking for that huge materia, and says something like it's just plain materia and leaves.

yeah but you cant see it

[UltimaLimit]

That's SHIVA! You get LEVIATHAN in wutai.

Sorry, I haven't played that part in ages. And my internet connection was down for awhile so I couldn't respond fast.

I guess the bottom lines are:
ChocoMog and Titan are easy to find if you're curious. If you're not very investigative, good luck.

and:
Alexander is a bitch to find if you suck at the Glacier like me, but if Chocobo breeding is harder KotR is nigh-impossible. Just remember you can kill Ruby Weapon for one (gold chocobo not KotR materia that is). I was doubly screwed since I suck at Glacier AND breeding.

[Jolts]

yeah but you cant see it

You can if you leave the area and go back. Well, you might have to go back on disc2 or 3, I'm not sure. I just remember that my very first play through, I missed Titan when I had the first chance, and when I went back to the ruinned reactor, I noticed a red dot on the screen that wasn't there before .

[Brian The Pink Shark]

ah yes i saw that too, it's just that i recently played it again and didnt see it when i went to the reactor, so i assumed i hadnt before

[Bloody_Valentine]

I myself, found that Alexander was indeed the hardest. I hate the Great Glacier....really gets on my nerves. I usually just bypass it now whenever I play....I just let my self pass out.