Aliasing casey → casey_(disambiguation)
Link to alias

Reason:

15 casey_(* tags. 18 other casey* tags. (30 uploads tagged with plain casey tag)

Fifteen casey_(* tags :
1) 2 casey(oc) character (may have to make this more specific)
2) 16 casey_(artist) artist
3) 4 casey_(bagelcollector) character
4) 9 casey_(character) character
5) 21 casey_(chris13131415) character
6) 7 casey_(homestuck) character
7) 1 casey_(laxjunkie74) character
8) 4 casey_(maloo) character
9) 1 casey_(mieno) character
10) 41 casey_(nitw) character
11) 2 casey_(no9) character
12) 2 casey_(pokemon) character
13) 28 casey_(swizzlestix) character
14) 3 casey_(tacdoodles) general
15) 15 casey_(tuke) character

18 other casey* tags:
1) 13 casey_bakire character (edit) casey_bakire
2) 1 casey_bridges character (edit) casey_bridges
3) 5 casey_cream character (edit) casey_cream
4) 2 casey_duggan character (edit) casey_duggan
5) 1 casey_fletcher general (edit) casey_fletcher
6) 6 casey_fynn character (edit) casey_fynn
7) 67 casey_jones character (edit) casey_jones
8) 11 casey_kelp character (edit) casey_kelp
9) 1 casey_lynch character (edit) casey_lynch
10) 1 casey_mccalister character (edit) casey_mccalister
11) 38 casey_ramser character (edit) casey_ramser
12) 2 casey_rhodes character (edit) casey_rhodes
13) 4 casey_russell character (edit) casey_russell
14) 1 casey_sinclair character (edit) casey_sinclair
15) 1 casey_the_rabbit character (edit) casey_the_rabbit
16) 2 casey_valentine character (edit) casey_valentine
17) 3 casey_weldon artist (edit) casey_weldon
18) 1 casey_young artist (edit) casey_young

and maybe caseyljones artist (27 uploads)

EDIT: The tag alias casey -> casey_(disambiguation) (forum #257802) has been approved by @bitWolfy.