Felix Yz

Book review by
Michael Berry, Common Sense Media
Felix Yz Book Poster Image
Tale of alien fused inside boy stresses acceptance, empathy.

Parents say

age 9+
Based on 1 review

Kids say

age 9+
Based on 3 reviews

Did this review miss something on diversity?

Research shows a connection between kids' healthy self-esteem and positive, diverse representations in books, TV shows, and movies. Want to help us help them? Suggest a diversity update

A lot or a little?

The parents' guide to what's in this book.

Educational Value

Felix Yz stresses the importance of acceptance, compassion, and empathy. It also captures the excitement of championship-level chess.

Positive Messages

Every person deserves respect and understanding. Everyone has weaknesses, but they often also have hidden strengths. People can face the possibility of death with courage and acceptance.

Positive Role Models & Representations

Because he's been fused with a hyper-intelligent entity from the fourth dimension, Felix sometimes can't control his body or speech. He learns to stand up for himself and trust others, even as he faces a potentially lethal medical procedure.


Felix is harassed by a bully, but the abuse is mostly verbal, with one or two minor instances of physical contact (pushing, having books knocked out of his hands, etc.).


Felix has a crush on Hector, and the two of them hold hands and share a fleeting kiss. Felix's mother seems to be romantically interested in Ursula, the chess instructor.


A half-dozen instances of "hell."

Drinking, Drugs & Smoking

What parents need to know

Parents need to know that Lisa Bunker's Felix Yz is a science fiction novel about a 13-year-old boy with an alien melded inside his body. Structured as a series of blog posts counting down to the date of a dangerous medical procedure, the novel follows Felix as he contends with a bully, learns about chess, makes new friends, and discovers family secrets. Characters have different ideas about gender and sex, but each is treated with compassion and understanding. There's a little swearing ("hell"), a little romantic attraction, a small amount of physical violence, and a lot of unpredictable action.

User Reviews

  • Parents say
  • Kids say
Adult Written bycarolyns25 December 4, 2019

Feel Good story

This was a nice story about a kid with disabilities that resulted from an accident that left him fused with an alien when he was a toddler.
It's cute, fun... Continue reading
Kid, 11 years old April 3, 2020

Why 3 dots on Sex?

Why does the CSM review have 3 dots on the Sex category? There is no sexual content in this book at all. Only crushes and I think one kiss. The TV show Babysitt... Continue reading
Kid, 9 years old December 4, 2019

It is a very good book

It's about a kid who might die in 30 days and is really stressed out. He even does something he probably shouldn't do.

What's the story?

As FELIX YZ begins, the title character has only 29 days before he undergoes a medical procedure that may either cure him or kill him. Each day, he posts a blog entry addressing his fears, his difficulties at school, his arguments with his family, and most of all the experience of having a hyper-intelligent alien entity from the fourth dimension melded inside his body. As the days dwindle away, Felix reaches out to new friends, tries new activities, and builds the strength to face his fate with dignity and bravery.

Is it any good?

Sometimes it's the main character's voice that draws the reader in, and this clever and compassionate science fiction tale boasts a talkative protagonist who's hard to resist. In Felix Yz, author Lisa Bunker doesn't pay much attention to the science behind Felix's multidimensional plight, but she creates a cast of offbeat characters who act as fascinating foils for stressed-out Felix. Serious issues, such as gender-switching and bullying, are treated with respect and usually a light, humorous touch.

Felix is someone adventurous middle school readers will relate to, and his story will capture hearts and open minds.

Talk to your kids about ...

  • Families can talk about how Felix Yz addresses the issue of gender. Do the characters in the novel have differing ideas about whom they should be attracted to?

  • Felix is picked on by a bully at school. What are some successful strategies for dealing with bullies?

  • One character in Felix Yz dresses differently on alternating days of the week. Do you think it's OK for men to wear women's clothes and vice versa, if they want to?

Book details

Our editors recommend

For kids who love science fiction and tales of empathy

Themes & Topics

Browse titles with similar subject matter.

Top advice and articles

Common Sense Media's unbiased ratings are created by expert reviewers and aren't influenced by the product's creators or by any of our funders, affiliates, or partners.

See how we rate

About these links

Common Sense Media, a nonprofit organization, earns a small affiliate fee from Amazon or iTunes when you use our links to make a purchase. Thank you for your support.

Read more

Our ratings are based on child development best practices. We display the minimum age for which content is developmentally appropriate. The star rating reflects overall quality.

Learn how we rate