Minor Characters You Love

[InvaderNamek12]

Piccolo from Dragon Ball Z

[Imp]

Radditz - Dragon Ball Z (you could say his personality helped shape future saiyans)

Green Biker Dude - Mega Man X2 (I will continue to fight in honor of you!)

Anamaria - PoTC - Curse of the Black Pearl (she deserved a LOT more screen time and way better than lame Swann...)

Shadow Priest - Mortal Kombat Universe (in Conquest, they were able to defeat everyone without much trouble)

[Summer Memories]

Takako Chigusa from the book Battle Royale.

RIP, you will be missed!

[Extraordinaire.]

Johanna from the Hunger Games

[Elkay]

The Bohrok from the Bionicle saga.

Although that's probably because I am one.

[Omni]

Princess Luna from MLP: Fim

[Zazzles]

Marie Kanker from Ed, Edd and Eddy

[Wattz]

Spoiler: This beautiful man. 

The amount of attention that Ziggy from the Xenosaga series does not get is overwhelming to me.

[Green Lantern]

Ever since Teamfourstar.... Popo!

And Super Kami Guru.
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Ginyu Force from Original DBZ.... Really, all of them were just entertaining..
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The "guest partners" on Burn Notice... I always want them to stay and make a BA super squad.

[Jonas Garland]

Let's see... this is going to be a long list I think, seen as though I tend to like side characters far more than some main characters.

Jinora - Legend of Korra
The Order of the White Lotus - Avatar: The Last Airbender
Kyoshi - Avatar: The Last Airbender
Question - Justice League Unlimited
Lu Su - Dynasty Warriors (One of the only Wu guys I actually like)
Chen Gong - Dynasty Warriors
The Master (Derek Jacobi incarnation) - Doctor Who
Jenny & Vastra - Doctor Who
Commander Harcourt - Doctor Who
Professor Paradox - Ben 10 Alien Force/Ultimate Alien
Doctor Fate - Young Justice/Justice League Unlimited
Chuck - Supernatural
Rufus - Supernatural
Charlie - Supernatural
Frank - Supernatural
Balthazar & Gabriel - Supernatural
Martian Manhunter -Smallville
Brainiac - Smallville
Captain John Hart - Torchwood
Beatrix - FF9

... To name but a few.