Zha Lee was involved with top level Chinese officials even before she left high school, thanks in part to her parents' position as a principal and a party official. She recognised most movers and shakers in the party and when she graduated from high school with no inclination for attending university, she landed a comfortable position in the Foreign Ministry, before being moved to the Chinese Embassy in Manilla. It was during her time in the Philippines that she met Santoso Budhisantoso, an equally egotistical young intern. Budhisantoso pursued Lee for weeks, ignoring her rebuffs, and eventually took more drastic measures. He cornered her in an office elevator and demanded she accept his moves.

His hands exploded into blades of fire, and Lee was frightened for the very first time in her life.

Her reaction scared her even more. The elevator was suddenly infused with light and Budhisantoso was screaming. The doors opened and she fled, leaving the Indonesian man behind. When she arrived back at her apartment, she was still glowing, and her partner reported her obvious ubergene to his superiors in Beijing.

It was at this time that the Immortals were being reinvented and Lee was recalled, quickly trained and assessed as a prime example for membership: she was beautiful, knew who was who in the Party, and had a public relations-friendly power.

But they rushed her into the team, and when she first stepped out into the public arena as Lamb, she faltered. Her powers shut down and she felt panicked. This power shutdown has occurred several times since and seems to be mostly stress-related. Because of the inconsistent nature of her powers, she feels more comfortable utilising her subterfuge skills.

Lee is beautiful and well mannered, the result of the perfect upbringing, except that she failed to go on to university which was a great disappointment for her father. She lacked the desire to push herself, and is satisfied with her current position. She is quite capable of looking after herself, but enjoys the pandering of others, especially men who seem to be attracted to her like a moth to a flame.

When her life is on the line, however, she refuses any help but her own. She will cast off any helpers or bodyguards and rely on her instincts and powers.

“It's me you should be looking for, but I'm not one to run and hide.”

Lee is able to generate intense light by drawing in the solar power of the sun. Her powers are inconsistent, sometimes becoming jammed during battles, and completely shutting off in darkness. She has shown an ability to produce heat and light, absorb energy and use it to fly and produce light shields.

Zha Lee seems to be too precious for the life she has chosen for herself. Her features are fine and her hair is always immaculately set. She wears a designer split dress as a uniform, much to the chagrin of the team's costumer, but the image works. Lamb is one of the most popular of the Immortals, especially with men and the young girls who idolise her.