Indigo Beetle is Danny Garret, grandson of the original Blue Beetle and has inherited some of his grandfathers powers (super strength and healing abilities, increased speed, heightened senses, and enhanced intellectual capacity), but like his gramps he also uses sophisticated technology to fight crime.
Indigo Beetle is based on the public domain character Blue Beetle (Fox Features): http://pdsh.wikia.com/wiki/Blue_Beetle_(Fox)
