Adam Back - 90s Cypherpunk, Inventor of HashCash, CEO of Blockstream
Amir Taaki - British-Iranian Anarchist, Created the Bitcoin Improvement Proposal system, Former Bitcoinica employee, Founder of DarkWallet, Former fighter in Rojava, Syria for the Kurdish YPG
Bram Cohen - Twitter bio: "Creator of BitTorrent. Now doing cryptocurrency stuff"
Charlie Shrem - Former CEO of the BitInstant bitcoin exchange, Former Bitcoin Foundation board member, Served a short prison term for supplying bitcoin to a user (BTCKing) who intended to sell them for use on the Silk Road dark web market
Craig Wright - Claimed to be Satoshi, provided fraudulent proof, when called out couldn't/didn't-want-to provide a real one
Dave Kleiman - Candidate for Satoshi, Forsensic Computer Investigator, Security researcher, Friend of Craig Wright
Erik Voorhees - Former BitInstant employee, Founder of Coinapult and Shapeshift.io, Outspoken pundit, Ideological convictions
Gavin Andresen - Satoshi's successor, Managed the project after Satoshi's departure until 2014. He lost write-access to bitcoin/bitcoin in mid-2016 during a political row, Holds the number 5 spot on the bitcoin/bitcoin contributors list (2018-05-28)
Gregory Maxwell - Bitcoin Core Developer, Blockstream CTO, Controversial figure to the Big Block political faction
Hal Finney - 90s Cypherpunk, Received first Bitcoin transaction (from Satoshi), Strong candidate for Satoshi
Jeff Garzik - Former Bitcoin Core developer, Now development lead of SegWit2X hard fork proposal
Jihan Wu - Owns Bitmain and operates AntPool (one of the larger Bitcoin pools), ASIC miner manufacturer, Controversial figure along with Roger Ver as figureheads of the big-block/bitcoin-cash political faction within the scaling debate
Luke-jr - Bitcoin Core developer, Blockstream employee, A figure of controversy to the Big Block faction
Mark Karpelès - Former CEO of the doomed MtGox exchange, Suspected to have caused the Nov 13 bubble with two trading bots, Former Bitcoin Foundation board member
Roger Ver - Early Bitcoin whale and investor, "The Bitcoin Jesus", Currently a controversial figure due to his staunch support for the "Big Block" faction in the scaling debate and for the "Bitcoin Cash" fork-coin, along with Jihan Wu seen as a figurehead of that faction
Satoshi Nakamoto - Pseudonymous Founder of Bitcoin, May be a person or group, Many people put forward as possible candidates, Very probably the alias of a 90s Cypherpunk
Michael Marquart (Theymos) - Owner of the bitcointalk web forum, Controversial moderator of the /r/bitcoin subreddit due to accusations of heavy-handed moderation and censorship of the online communities he controls
Vinay Gupta - 90s Cypherpunk, Inventor of the Hexayurt, Resilience Guru, Involved with Ethereum