I realize these aren't great but it's still gonna be 2 more weeks until I have time to make some nicely polished drawings so this is all I can squeeze out at the moment ):
Ahaha I noticed I draw a lot of guys so I threw a Rin in there as well.
1 - Matuoka Rin (c)
the swimming anime Free!
2-7,17 - (c) Me
8 - Kagamine Rin (c) Vocaloid
10 - Speed of Sound Sonic (c) Onepunch man
15 - Nagisa Kaworu (c) Evangelion