Profile, Abilities and Weaknesses description taken from The Transformers: More Than Meets The Eye, comic series published by Dreamwave Comics in 2003.

Bio:
Sparkstalker is the best kind of criminal genius-the kind that never gets caught. He plots every scheme out to the smallest detail thanks to his zeal for caution and obsession with minutia. In the Decepticon army, he's turned his precise talents to decoding secret Autobot transmissions with commendable success. Sadly, the job doesn't carry the same thrill for Sparkstalker as his criminal exploits, and his fellow Decepticons don't really care how good Sparkstalker is at his job, no matter how hard he works. Despite his immense contribution to the war effort, they find Sparkstalker useful for his fearsome-looking altemate mode, which frightens Autobots even though Sparkstalker's combat abilities leave much to be desired.

Weapons & Abilities:
Subject possesses great intelligence.  His methodical thought process is ideally suited to plotting out strategies and tactics or decoding heavily encrypted transmissions. In monster mode, his mouth-mounted flamethrower has a range of 15 feet.

WEAKNESSES Subject has only average strength, and his primary offensive weapoin -his flamethrower -is not very accurate or powerful.  It requires frequent maintenance. 

Bibliography of significant appearances: The Firecons appeared in only one issue of the (Marvel Comics) G1 comic series 
* Transformers (Marvel) #46 - 

Other Appearances: