Treno is a town that is filled with many mysteries, many of which turn into various sidequests for Zidane and the gang on their journey. The Treno weapon shop, in the heart of Treno, holds one of these. The shopmaster hides a surprise under the traveler's very feet - a gate that drops down to pit the customer against a strong foe! Will you be able to defeat these foes and get your prize, or will you end up getting injured and unable to compete?
No expirence or AP is rewarded for these said battles.
Griffin On Disc 2, you can fight Griffin. If you win, you'll get a Tonberry Card.
Catoblepas On Disc 3, you can fight with Catoblepas. For winning, you will recieve 15,000 Gil.
Amdusias On Disc 3, you can fight with Amdusias. For winning, you'll snag a pair of Running Shoes.
Behemoth Last, but not least, on Disc 4, you can fight against Behemoth. Win? Of course. You'll get a Circlet.