"Doppleganger" (sic) is episode Five, of the First season, of Alias (TV series), created by J. J. Abrams, and starring Jennifer Garner as Sydney Bristow, a CIA double agent.
Sydney's secret double agent status is jeopardized after she smuggling a biotech engineer into SD-6 from her mission in Berlin. Will meets a woman who confesses that she was having an affair with Danny shortly before his death. Vaughn informs Sydney that her father may be working for a third secret operative agency.
On the heels of his successful aquistition of the legendary scroll "Creatures of the Etherial Planes" Phintias at the First Edition in the Imperial City Market District has gotten ahold of a unique book and is willing to sell it.
Upon purchasing the book "Reflective Tome" the player will gain the spell "Summon Doppleganger" which temporarily summons an exact copy of the player which follows the player, assists him in combat, has all the abilities of the player, and can serve as an interesting sparring patrtner.
-If you delete the junk spells out of your spell list then your Doppleganger won't waste time casting them, otherwise he has full access to any spells the player has.
Doppleganger is basically an evil counterpart to Spider-Man and his powers mimic that of Spider-Man in speed, stamina, and strength...Plus has the extra agility and use of four extra arms...He cannot talk and is basically mindless.
After the Dopplegangers were destroyed in the Infinity War limited Series, Spider-Man rudely learned that not ALL the Doppleganger's were destroyed!...The Spider-Man Doppleganger with help from the Demogoblin survived and went on to cause a lot of havoc for Spider-Man.
Not only was the Spider-Man Doppleganger much trouble to his good counterpart, but the "Evil Twin" was a thorn in the side to Ghost Rider, Moonknight, and Johnny Blaze (The original Ghost Rider)...This story played out in Web Of Spider-Man #93-96 as well as Spirits Of Vengeance #5.