Out of all the pets, Russell could be considered the most levelheaded of them. He is very smart, clever, and loves to organize things and make plans. Unfortunately, he sometimes goes overboard trying to make too many plans at once. He also tends to overly-complicate things when they should be really easy to do or manage.
It's not that he means to make things harder or seem twice as challenging, he just wants to try to make everything as flawless as possible in order to succeed.
Sometimes he can be a little bit selfish, such as when he tried to make Minka Mark sell her art and what-not, not realizing that he was only making it business for her, thus no longer any fun. He has a somewhat cynical view of "love" as seen in "Secret Cupet". However, after briefly falling in love with Penny Ling (due to a love song spell by Sugar Sprinkles) he seems to have a more positive outlook on it.
- A running gag is that he's often mistaken as a porcupine.
- Russell is similar to Twilight Sparkle in My Little Pony: Friendship is Magic. Such as having a double double checklist and even having many organization needs as Twilight Sparkle has.
- He has also have same personality as Samson and Raj from Camp Lazlo. Also he have his grumpiness like in Squidward of Spongebob Squarepants. He might have also a personality similar to Double D from Ed, Edd and Eddy, and as smart as him.
- Russell will meet the FT Squad in The FT Squad Goes to Littlest Pet Shop.
- Russell will meet Team Robot in Emerl's Adventure's of Thomas & Friends: The Adventure Begins.
- Russel will meet Thomas, Twilight Sparkle, and their friends in Thomas and Twilight Sparkle's Adventures of Littlest Pet Shop: Blythe's Big Adventure.
- Russel guest stars in Brian Griffin's Adventures of Planes, Thomas and Twilight Sparkle's Adventures of Planes: Fire & Rescue, Thomas and Twilight Sparkle's Adventures of King Kong, Thomas and Twilight Sparkle's Adventures of The Terminator, Thomas and Twilight Sparkle's Adventures of The Terminator II: Judgment Day, Thomas and Twilight Sparkle's Adventures of The Terminator III: Rise of the Machines, Thomas, Twilight Sparkle and The Chronicles of Narnia: The Lion, The Witch, and The Wardrobe, Thomas, Twilight Sparkle and The Chronicles of Narnia: Prince Caspian, Thomas and Twilight's Adventure with Jimmy Neutron: Boy Genius and Thomas and Twilight Sparkle meet Shrek.