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My Favorite 2000s YA Book Sidekicks!

I’m thinking about my Favorite 2000s YA Book Sidekicks! I’ll tell you mine and you tell me yours!

This post was originally published in 2012 and updated in 2024.

We tend to gush over lead characters, but what about those in supporting roles? Who are some of your favorites?

I love sidekick characters. Behind every great hero/heroine is a great sidekick. I definitely think that many of them have so much personality that they deserve their own books! Here are some of my favorites.

  • BFFs
  • Best friends
  • Frenemies
  • Found family

Some of My Favorite Guy Sidekick Characters:

Simon from the Mortal Instruments series by Cassandra Clare.

Beau from the Eternal Ones series by Kirsten Miller

Hana from the Delirium series by Lauren Oliver. (Yeah, she got a novella. But I hope she pops up in book three.)

On the contemporary front, Sarah Dessen always writes great secondary characters: Deb from What Happened to Goodbye, the Clementine’s girls from Along for the Ride

Call me crazy — I even love control freak Jennifer from This Lullaby.


An online survey asked people their favorite sidekick characters. The winner?

Tell me in comments — who are your favorite supporting characters? Here’s what my commenters thought back in 2012!

“Grimalkin from the Iron Fey series, Cole St. Clair from the Wolves of Mercy Falls, and Adam from If I Stay..”

Eliza

“Sam Yu from White Cat, Kenji from Shatter Me, and DEFINITELY Simon from TMI series and Hana from Delirium.”

Anonymous YA Reader

You might also like to check out my list of Best YA Friend Group Mysteries.

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24 Comments

  1. oh this is such a great question! I'll have to say Sam Yu from White Cat, Kenji from Shatter Me, and DEFINITELY Simon from TMI series and Hana from Delirium. love those two so, so much!

    1. I'm listening to the White Cat audiobook while I walk the dog in the mornings (great audiobook BTW narrated by Jesse Eisenberg) and I love Sam!!!!!

      Kenji is also a great choice — I'm really looking forward to reading more about him in Unravel Me. He better show up in that book!!!!

      Okay, exclamation point abuse. Working on that.

  2. I love this!! I have to go make my post. 🙂 I love Bailey, Poppit, and Widget from the Night Circus and all the characters in HP are fantastic. And Percy Jackson, too.

    1. Okay, coming to check out your post now…..

      I must admit that I could not get into the Night Circus. Everyone I know loves it. I'm going to try again this summer.

  3. I love Kaitlyn from Descended by Blood. Also Issie from the Need series. Of Course I love Simon from TMI he is super. I love all the secondary characters in that series. I also really adore the secondary characters in the Soul Screamers series too.

  4. I so rarely like secondary characters! I LOVE Simon though but I felt like he was a main character especially in the 4th book. And he so deserves it because he is my favorite I think out of everyone.

  5. Well, I think everyone agrees about Cassandra Clare's characters. I think Ally Carter does great side characters in all her books (The Heist Society and The Gallagher Girls).

  6. Darn blogger won't let me reply to your comment thru the thread.

    Anyways, House of Night is worth the read. It gets super magical though as the book progress into the series.