The upcoming banner for Final Fantasy Brave Exvius (global) is "Gilgamesh Vanquishers". Included in this banner are Ramza (FF Tactics), Agrias (FF Tactics), Snow (FF XIII), Exdeath (FF V), and Bartz (FF V).
After some quick research, I see that Gilgamesh was Exdeath's right-hand man in Final Fantasy V. Since Bartz is the main protagonist of FF V, his presence makes perfect sense. Exdeath might be a bit of a stretch as a "vanquisher", but I haven't played FF V so maybe that makes more sense than it appears.
I also see that Gilgamesh appears as a monster in FF XIII-2. It looks like Snow at least makes an appearance in that sequel, so okay, maybe.
But why Agrias and Ramza? I've played FF Tactics dozens of times, and I don't remember Gilgamesh showing up, nor is that listed as one of his appearances on the wiki page.
It seems unlikely that this would be completely random, as there were plenty of other characters available for them to choose from that did vanquish Gilgamesh at some point, including a number from Final Fantasy Type-0 and Final Fantasy IV.
So, basically, what association is there between these characters and Gilgamesh? Does he appear in Final Fantasy Tactics?