Gazelle

Giselle Smith of Triton (one of Saturn's moons), was caught in an invasion wave of destroyer units when the Legion of Super-Heroes appeared to defend the population. In the shelter of the ski resort she was visiting at the time, Giselle was beaten by bullies because of her rare mutation enabling her to control her own metabolism. Saved by Invisible Kid, she later helped the Legion defeat the destroyer units; though afterwards she claimed that she hated the United Planets and the Legion, and only fought to save herself.
Next time she appeared, she had become a member of the United Planets Young Heroes, the UP's answer to the Legion - under the code name Gazelle. When the team failed, Gazelle realized she had been wrong about the Legion, and applied for a Legionnaires try-out. Out of four candidates - Gazelle herself, Night Girl, Turtle and Sizzle, Giselle was the only one to be admitted into the Legion core team on a full-time basis.
Gazelle possess the ability to manipulate her metabolism in order to achieve several effects, but most prominently boosts it giving her a substantial degree of super strength and speed. But she is also capable of slowing down her metabolism to such an extent that she enters a state akin to hibernation.

Element Lad

Real name Jan Arrah, a native of the planet Trom, he has the power to transmute chemical elements by touch. Element Lad is the last survivor of his race and a member of the Legion of Super-Heroes. 

Element Lad first appears in Adventure Comics (vol. 1) #307 (1963). In this first story he is briefly known as "Mystery Lad" as the Legionnaires try to guess his superpower. Jan is the last survivor of Trom; with all of the planet's natives sharing Jan's abilities, the other Trommites had been massacred by the space pirate Roxxas for refusing to transmute valuable elements for him. Jan had only survived this genocide because he had been in space at the time.

With the aid of the Legion, Roxxas is brought to justice and Jan joins the Legion, using the codename Element Lad. He is a member of the Legion for many years, serving terms as leader and deputy leader. He is eventually linked romantically to Shvaughn Erin, the Science Police's Legion liaison, who herself first appeared in Superboy and the Legion of Super-Heroes #241 (July 1978). 

The BG a wall paper from the google results of space nebula. I toke the liberty to slightly redesign his icon/logo in his chest. One more legionnaire down a million more to go...

Tyroc

He first appeared in Superboy #216 (April 1976), and was created by Cary Bates and Mike Grell. Debuting a year before Black Lightning, he is one of DC's first black costumed superheroes. Tyroc's superpower was his reality warping screams, which he could use to create dimensional portals, force fields, transmute objects, freeze objects, burn objects or simply destroy them. He could also teleport himself and at least one other person, although the exact limits of this ability were unknown. The effects and range of his powers were consistent when he first appeared, but later seemed to vary with the writer. Later writers often treated his power as simply being a "sonic scream" similar to that of Black Canary. Tyroc could fly using either his own inherent powers (as seen in his first appearance before joining the Legion) or using his Legion flight ring. 

I went over and changed a few things on the original BG, it's called "Future City" by Robert Brown.

I was debating on doing Tyroc's original costume or the animated one James Tucker redesign for the show.

I ended up having fun character designing. And for the first time ever, I added a watermark so people knows where this artwork came from.

Cheers.

GL Rond Vidar

The Green Lantern Rond Vidar first appeared in Adventure Comics #349 (October 1966), and was created by Jim Shooter, Mort Weisinger and Curt Swan. He's the Green Lantern of the future. Sent to live with a family on Earth, Rond proved to be a genius at temporal theory. He created the Time Cube, a device which can transport its contents in time. The Time Cube later proved indispensable to the Legion, who used it to stop Universo from taking over the world. Soon the Legion made Rond an honorary member and he continued his research, collaborating on many experiments with the super-intelligent Brainiac 5. At some point in Rond's career, the Guardians of the Universe recruited him to be a covert member of the Green Lantern Corps, since Green Lanterns were banned on Earth at the time. 
The BG is from a DC Comics wallpapers website. I only went over it a bit.
Yeah, as you may have noticed I added the mask. Just having fun with character designing. 
If he IS a covert GL, I thought what about the classic Green Lantern mask? It looked cool to me, so I left it alone, regardless than the original character doesn't wear one.
More to come...

Light Lass

Ayla Ranzz, known originally as Lightning Lass also known as "Light Lass" is a super heroine in a future DC Comics universe. She is a member of the Legion of Super-Heroes and was ranked 47th in Comics Buyer's Guide's "100 Sexiest Women in Comics" list. There have been three versions of Ayla since her original debut; these versions are separated by the events of both the Zero Hour and Infinite Crisis limited series. 
In this version I've chosen to draw, after Dream Girl had a vision foretelling that Ayla's lightning powers would eventually kill her. Nura (Dream Girl) used her advanced science to change Ayla's powers to gravity nullification. Her new ability to make objects super lightweight led her to her code name Light Lass.  
Ayla Ranzz (of the planet Winath, where twinning is normal) first appeared in Adventure Comics #308, (May 1963). She is the twin sister of fellow Legionnaire Garth (Lightning Lad) and the younger sister of the villainous Mekt (Lightning Lord). All three gained their lightning powers after being attacked by creatures called lightning beasts on the "lightning world" of Korbal. 
I was inspired by my stunning friend Tara Rice for this particular pose, she is an amazing model, actress and host. I know the original character version has shorter hair, but I decided to give her a new hair style. That's why I thought Tara's image was perfect for this. 
I used and flopped the same BG from the Lightning Lad piece, originally done by the Gelmi Art Studio, I also had to tone it down so it blends with the animation style a little better. 
Hope you like it. 
Cheers.

Spider Girl

The character was first mentioned as a concept in the letters page of Adventure Comics when a fan suggested a character with the power of super-strong prehensile hair.

30th-century earthling Sussa Paka underwent gene-altering which allowed her absolute control over her long hair. Once a member of the Legion of Super-Villains, once a Legionnaire, once a thief, Sussa has a sticky past. 

Spider Girl formally first appeared as a failed Legion of Super-Heroes applicant.

She went on to join Tarik the Mute's underground academy for supervillains and later the Legion of Super-Villains.

During the Five-Year Gap run in Legion of Super-Heroes volume 4 (1989), Paka was written as a half-reformed thief with a crush on Legionnaire Ultra Boy.

She joined the adult Legion as Spider Girl, but when the team was outlawed by the United Planets, they went underground, changing their appearances and codenames, even wearing masks. In this storyline, occurring just prior to the Zero Hour reboot of the titles, Sussa changed her codename to Wave and dyed her hair blue.

The BG was made by artist Matt Luxton, of course I changed it a bit to fit my character better.
I'm still not 100% with her left side, I may revise it eventually fwi.

Proty

The origin of the Proty's race is given in Adventure Comics #334. Many centuries earlier a race called the Llorn colonized a planet in the Antares system that was inhabited by race of peaceful creatures. The two races managed to live in harmony until a passing star upset the ecological balance of the planet. The Llorn were forced to evacuate the planet. Before leaving, they used their advanced technology to alter the planet's natives into protoplasmic blobs that could change their shape to suit the environment.

Proty I is rescued from an alien menagerie by the Legion of Super-Heroes, and adopted as a pet by Chameleon Boy. The affectionate alien proves useful to the Legion, and becomes quite close to Saturn Girl, as her telepathic abilities allow her to read its thoughts.

Proty is replaced by Proty II, another member of their race. Proty II later becomes a member of the Legion of Super-Pets.

Sun Boy

The study of the history of the Legion of Super-Heroes inevitably leads to the study of many unusual superhero archetypes and attitudes. Whereas most teams consist of six or seven clearly defined characters, a group the size of the Legion has room for Wildfire’s snarkiness, for Dawnstar’s occasional narcissism, for the roguish charm of Ultra Boy, for Shadow Lass’ antisocial tendencies, even for Quislet’s complete disregard for convention. It also leaves room for your classic cocky womanizer, smart but not the smartest, charming but not the most so, certainly heroic but hardly a paragon. It’s kind of ironic that the Legionnaire with the smartest costume (one that lasted for over 40 years with virtually no changes) and the most heroic look is one of the most troubled and tragic LSHers of them all. This, then, is your Major Spoilers Hero History of Dirk Morgna of Earth… Sun Boy!

Sun Boy can internally generate a seemingly limitless amount of electromagnetic radiation, both heat and visible light. He is also immune to virtually all forms of heat and radiation (except when he was killed off during the "Five-Year-Gap" era).