The handful of servants that actually can persist past part 2 with guda is really funny to think about actually:
-Mash, life partner and oomfie
-Scathach, jobless hobo who leaves her depression hole and sticks close to Guda for the chance to fistfight whatever cosmic threat comes next
-Kiara, who quits her fuckass job at Seraph and turns up at Gudas house only to have the door slammed in her face
-Technically anyone with Independent Manifestation could but I imagine even the beasts would bow out gracefully since pretty much all of them learn to let go.... BB, however-
-Oberon is probably still a brainworm inside Gudas head on the nonzero chance the april fools event is real and he really did lay eggs in Gudas head. The moment this happens though Artoria Avalon's hand shoots up from the ground like a zombie all the way from Reverse Side.
-Irisviel is actually just straight up stolen from another timeline and wears her Heavens Feel dress for shits and giggles she's not actually a servant. This also applies to most of the other Nasuverse collab characters from Ryougi Shiki all the way to Phantasmoon
-Guda received a lot of spam emails before realizing it was Merlin!
-There is always a nonzero chance that the Tunguska Koyanskaya egg meteor just lands on Earth again
-Its your friend U-Olga Marie the President of Earth!
disclaimer that most of the reasonably powerful servants like Gilgamesh, Morgan and the Lostbelt kings can pull some bullshit to stay but I imagine they'd all bow out and I'm basing this mostly on the actual Living people who just kinda became classified as Servants in Chaldea and would thus not disappear ala the end of Part 1
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