Why does Gilgamesh's casual appearance look different in different routes?


In the actual Fate Route (after Saber is summoned) we see Gilgamesh in casual
attire when he confronts Saber and Shirou before getting into his golden
armour. However, in Unlimited Blade Works and before the start of the Fate
Route, his casual attire is different, particularly his hair and that he's not
wearing earrings.

![Gilgamesh casual in Unlimited Blade
Works](https://i.stack.imgur.com/pF9QZm.jpg) ![Gilgamesh casual in
Fate](https://i.stack.imgur.com/i31T2m.png)

(left: Unlimited Blade Works; right: Fate)

Now I can understand that in Unlimited Blade Works the reason he doesn't wear
his armour when fighting Shirou in the end is in part due to his ego in
thinking he won't need it on someone like Shirou. However, I don't think it's
his ego which is the cause of his change in appearance.

So I am wondering, why does Gilgamesh's casual appearance look different in
these two routes, considering his Unlimited Blade Works appearance was also
seen when he was talking to Sakura?




I never play _Fate/stay night_ until the end but know a little, I think it's
more like "he has anything in his vault and willing to wear casual clothes, so
let's make him stylish" sort kind of thing. Because as I know, other servants
don't even wear "normal casual" clothes as much as Gilgamesh, they pretty much
always use their astral dress/clothes which is very(?) strong/sturdy (in the
case with Saber's dress that can block certain magical attacks).

As for the reason why Gilgamesh wear casual clothes much, I think it's to
emphasize his arrogance, I mean he is a king and think himself the most
powerful entity in their universe, and mostly because he is ranged-type
because most of the time he just throw whatever in his vault, even his
strongest weapon Ea isn't melee-type weapon like Lancer's noble phantasm Gae
Bolg: barbed spear that pierces with death or even Caster's Rule Breaker or
Assassin's Tsubame Gaeshi.

