Leo was an ordinary guy until he was attacked by Victor Krane, leading him to get both of his arms bionic. Leo started going on missions with Adam, Bree, and Chase, and trained in the Davenport Bionic Academy, and became a mentor. In The Vanishing, Leo got a bionic upgrade and stayed with Adam at the Bionic Academy, while Bree and Chase joined the Elite Force
Later that month, in The Bree Chronicles, Leo helped Bree and Chase capture Riker, who was disguised as a pharaoh, in Egypt by absorbing his power. Originally taking him to the Egyptian government, Leo realized that the pharoah was a "bad guy", so he took him to the Bionic Academy instead. When getting there, Leo discovered that what he absorbed was Riker's shapeshifting power; thus was able to turn into anything, even a black swarm. When getting this power removed, Leo sent Adam to Centium City to warn Bree about Roman and Riker.
In 2015, Leo's right arm became bionic, and got a bionic chip for the rest of his body. A year later, they got upgraded, making them 10 times more powerful.
- Super Strength
- Laser Sphere
- Energy Transference