Two more characters from this summer's DC Comics adaptation Green Lantern have been revealed via their action figure incarnations. You can check out the Green Lantern Corps. Rot Lop and G'Hu images below, as well as character descriptions for both aliens:

Green Lantern Merchandise #3
Green Lantern Merchandise #2

About Rot Lop:

Rot Lop Fan is a member of the Green Lantern Corps, known to him as the "F-Sharp Bell Corps". He is blind and uses a power ring based upon the principles of sound. Rot Lop Fan protects Space Sector 911 and hails from the Obsidian Deeps. The Obsidian Deeps is a black and lightless void in a remote section of space. As a means of adapting to the lightless void, the inhabitants of the Deeps have evolved an advanced sense of hearing, while at the same time losing their sense of sight. Among the blind creatures of the Deeps was Rot Lop Fan, a brave and noble member of his people and an ideal candidate for the Green Lantern Corps. Rot Lop Fan was approached by Katma Tui to join the Corps and serve as a Green Lantern; however, her request was meaningless to the blind alien. Being blind, Rot Lop Fan had no concept of light or color. The terms "green" and "lantern" had no meaning to him, and could not be translated by the power ring. The resourceful Katma Tui reasoned that if she could not explain the concepts of light, she would translate using sound. She instructed Rot Lop Fan to imagine a sound with a pleasing resonance. This he did, as a sound in the F-Sharp range. With the concept of sound, Rot Lop Fan could manipulate the energy of the power ring. Rot Lop Fan was overjoyed and accepted the commission into the Corps."

About G'Hu:

G'hu was a prison guard on Takron-Galtos when he was captured by the inmates and used as a hostage to negotiate their release. By the time the guards were able to free him, they found he had already taken down the inmates who were holding him and was just waiting for them to open the door. G'hu is a confident, able officer in the Green Lantern Corps, and Salaak has taken a personal interest in his movement through the ranks, though he sent G'hu to combat reorientation after he failed to prevent Green Lantern Honor Guard Guy Gardner from disturbing the Guardians of the Universe. As well, Sciencell Warden Voz is currently attempting to recruit him as the head guard of the Sciencells. G'hu has been partnered with Harvid, upon the older Lantern's re-enlistment and return from retirement."