Who's your favorite pony from each generation?

[starrynights]

I'll go first
G1: Seawinkle
G2: Princess Silver Swirl
G3: Star Catcher
G4: Princess Luna

[brightberry]

G1: Glory
G2: Brightberry
G3: Autumn Sky
G4: Cherry Spices

[freezestime]

G1: Sweet Sundrop
G2: Princess Fuschia
G3: Lolligiggle
G4: Princess Luna

[Sparkle Pony]

G1: Majesty
G2: Copper Glow
G3: Waterfire
G4: Honey Rays

[caseysealia]

G1: 4-speed
G2: Light Heart
G3: Twilight Pink
G4: Sunset Shimmer

[Ragamuffin]

I can't give you a definitive single pony per gen, sorry...

G1: Speedy... maybe...
G2: Muse
G3: Meadowbrook and Guava Lava
G4: Dewdrop Dazzle and Star Swirl

[kingluke]

g1: Wind whistler
Tales: Sweetheart
g2: Night shine
g3: Lickety split
g4: Rarity

Edit: tales now included.

[MJNSEIFER]

I know that they're both G1, but I'm going to cheat and mention My Little Pony Tales separately, because I am more familiar with the cartoons, even though I respect and would love to have collected the toylines, and would still like to.

G1: Firefly
Tales: Bon Bon
G2: (Haven't decided yet...)
G3: Minty
G3.5: (Haven't decided yet...)
G4: Fluttershy

Yeah, I know I went for overrated ponies, but I genuinely love them, and they do mean something to me.

[Carrehz]

G1: Nachtlicht and Applejack
G2: Ivy
G3: Port-o-Bella and Pumpkin Tart
G4: Trixie Lulamoon

And honorary mention to Pinkie Pie, both G3 and G4. :B I have enough of her that I'd feel remiss not including her.. she's not my all-time favourite or anything... but I'm happy to be stuck with her, heheh.

[little.fox]

Toys or characters? I’m going to assume toys.

G1 is nearly impossible, but I’ll say Gusty because of sentimental reasons.
G2 Princess Silver Swirl
G3 Diva Tinka-Tinka-Too
G4 FS Princess Luna

[Safflower]

G1: Starshine, my all time favorite <3
G2: Ivy
G3: Maybe Starsong? I’m not well versed in G3 but she was my childhood favorite
G4: Sunset Shimmer is most definitely the winner.

[mlp4me]

G1: Barnacle - yar!
G2: Eve
G3: Beach Belle

[Zapper]

I feel like my faves change all the time, so here is the current list:

G1 - Ringlet, Swirly Whirly (German version)
G2 - Her Majesty Pearl, Ivy
G3 - Minty, Anchors Away
G4 - Dewdrop Dazzle

The pattern of turquoise/green and yellow is so obvious. I am just really drawn to these colors right now.
G3 Minty is my overall favorite character, too. Followed by G4 Rarity and Starlight Glimmer. My G1 fave is Gusty, G2 fave is Ivy (because she is basically Rarity with Minty's colors).

[Sora]

G1: Sweet Stuff
G2: Copper Glow
G3: Waterfire
G4: Tempest Shadow

[darkangelxix]

1. Lemon Drop (My all-time childhood favorite pony)
2. Moondancer
3. Butterscotch
4. To be decided
5. To be decided