Clay, like all the other Nexo Knights, has a newly-molded helmet and shoulder armor that depicts his trademark eagle crest on his torso. His suit's torso and legs have grey color with blue designs with orange highlights, while his arms are silver and his hips and hands have a dark blue color. Without his helmet on, he has dark brown hair.
His ultimate form has the same armor and helmet, but in transparent blue. The design of his torso and legs is the same than in his regular form with blue and dark blue replacing the grey and silver colors.
Clay is the leader of the Nexo Knights. He was originally a farmboy, graduating top of his class before the official graduation ceremony. He seemed to be the only person who really cared about the royal jester Jestro, who was convinced to turn evil by the Book of Monsters and Cloud of Monstrox, although Clay repeatedly tried to stop him. Jestro later tried to attack the city with his Lava Army and Stone Army, with Clay and his fellow knights tried to defend it, before becoming quickly overwhelmed by the strange new opponents. Clay was the first to receive his Nexo Power, directing the others also to point their shields at the sky whereas they also received their Nexo Powers. He later lead the Nexo Knights to try to overcome Jestro's Lava Army, succeeding when he received ultimate power from Merlok 2.0 and destroying the entire army except for Jestro and Monstrox. He would use his magic hand. Clay is with his good friend Jestro.
After being struck by Monstrox' lightning attacks, he begins slowly turning to stone. He does eventually turn into stone, and is reborn as the Gray Knight, but is quickly turned back to the good side by Merlok. He is eventually turned back into a human thanks to his innate magic abilities.
Clay is a rather serious individual, who plans well before attacks. Once a simple worker boy who had to work to get supper, he grew to become top of his class in the Knights' Academy. He is a concerned friend, willing to help others when they are down. However, he is often frustrated with his fellow knight Lance Richmond's easygoing nature.
Gallery of variants
- 70315 Clay's Rumble Blade (2016 armor)
- 70317 The Fortrex (2016 armor)
- 70321 General Magmar's Siege Machine of Doom (2016 armor)
- 70330 Ultimate Clay (Ultimate Clay)
- 70351 Clay's Falcon Fighter Blaster (2017 armor)
- 70353 The Heligoyle (2017 armor)
- 70356 The Stone Colossus of Ultimate Destruction (Stone)
- 70362 Battle Suit Clay (Battle Suit)
- 72004 Tech Wizard Showdown (2018 armor)
- Lego Nexo Knights: Character Encyclopedia (Semi-Stone armor)
- Lego Nexo Knights: Digital Duel (Gold armor)
Video game appearances
- His name is a pun on "Claymore", a large medieval sword.
- The emblem on his armor is taken directly from the 1985 theme Black Falcons, a throwback to Classic Castle themes like most of the other NEXO Knights characters.
- His mother is Ruina Stoneheart.
- Clay was voiced by Giles Panton, who would go on to voice Prince Kalmaar in Ninjago: Masters of Spinjitzu and Tony Stark/Iron Man in LEGO Marvel Avengers: Climate Conundrum.