Thunder Spectrum is the son of Rainbow Dash and Lightning Storm, He is the intelligent yet athletic older twin and is usually the leader of the siblings. He has his father’s golden coat, but his mother’s eyes and rainbow mane and tail. He’s just like his parents, loyal, competitive, and mischievous. He can fly fast enough to keep up with his parents and can even do a sonic rainboom, but with more difficulty. Despite being a fast flyer, Thunder’s also an expert with building Technology and controlling electricity just like his father. The problem is that Thunder can easily get frustrated when a machine he builds/fixes doesn’t work properly. Thunder’s cutie mark is a storm cloud with a rainbow lightning bolt..
Relationship with Rainbow Dash's human counterpart
Thunder Spectrum along with Blue Star and Sunbeam are good friends with their Mother's Human Counterpart because she's a lot like her.