Picture of Caiera Oldstrong

Caiera was born on Sakaar to a tribe of Shadow People, the creators of the Old Power. She was raised by the priests to be a shadow warrior. When she was thirteen, her village was attacked by alien "spikes" that caused the other villagers to mutate into monsters. Caiera, the only survivor, was rescued by the Red Prince.

When the Red Prince becomes the Red King, Caiera is his loyal lieutenant. When the Hulk arrives on Sakarr and gains public support as a gladiator, she protects the Red King from him. After a failed attempt to ruin his popularity, the Hulk and his Warbound escape.

Caiera is sent to kill the Hulk, but they encounter spikes during their battle. The Red King reveals he controls the spikes, devastating her. She turns against the Red King and aids the Hulk in a coup. Hulk becomes the Green King, and he marries Caiera (Even transforming back into Bruce Banner so that she can meet all of him). She becomes pregnant, but dies in an explosion before giving birth. Hulk returned to earth to avenge her death in the World War Hulk.

Her two sons, Skaar and Hiro-Kala survived the explosion and occasionally see Caiera as a spirit.