Please link to the wiki here:
How many edits have you made on that wiki?
How many days/months have you been editing there?
On the Special Pages → Special:ListAdmins when was the last time an admin edited, and who was it?
Other than that, though:
Blue Donkey Kong 19/11/16 (v. minor edit) - most active other Sysop though, having edited the site on 15 different days in 2016 and having an enormous amount of edits to his name.
Cemalidor 18/09/16 - in direct response to his talk page, written by me asking if he was still active. before that, 06/11/15.
Tahngarthor 09/09/16, though a random and tiny edit. before that 30/05/16 confirming my JR Sysop status. before that 03/12/15 (minor change, only one in 2015)
Any other information:
I've been chatting with Bert via e-mail with a view to reviving discussion between contributors and growing or merging the community with the existing finalfantasy.wikia site. Having full admin authority on the site would make this a lot easier, especially when it comes to organising Discussion settings and creating new Sysops.