The Veil Lizard is a large, bipedal lizard resembling a chameleon. It has a dark green body, with five tan spikes along its back. It often stands hunched over, holding its arms out in front of it. Its arms and legs sport zig-zagging stripes that alternate from tan to a dark green, with gold bands at the shoulder, wrist, hip, and ankle. Its green hands and feet have three toes each, two in front and one in back, with light green claws. Its prehensile tail is curled up behind it in a spiral. It has a smooth jawline, a pink tongue that can extend to surprising lengths, and large yellow eyes with small black pupils. Its Heartless emblem is on its chest.
The Veil Lizard's name, powers, and appearance may be a reference to real-world veiled chameleons. It is one of the few Heartless to actually roar.
While the Stealth Sneak and Sneak Army begin their battles invisible, the Veil Lizard does not. Instead, it repeatedly vanishes throughout the fight. At the start of the first match, immediately Lock-On. Use caution as the Boss will knock you away with a swing of its tail. It will turn invisible from time to time, so continue swinging the Keyblade, and it will reappear. When it disappears, you can look on the map to see where to find it. As its HP diminishes, the Veil Lizard's eyes will glow. Be careful of the lasers it fires from its eyes. After a few more attacks, a cutscene interrupts the battle, starting the second phase of the fight.
At the start of the second phase, the Veil Lizard is back to full health. From this point forward, the Heartless will use its long tongue and claws to deal damage. It will continue to turn invisible, making it difficult to land an attack. Lasers are also still fired from its eyes. Any other attacks it uses in this match are the same as in the first fight, so you should already know how to dodge them.
Bring as many healing items as possible into this battle. Be sure to use your Limit Break, and also equip the Fire Spell for when you need to put some distance between yourself and the Veil Lizard. Axel will aid you in this fight, but the Heartless Boss's special ability does cause some of your attacks to miss.