Four New Characters to Show Up in Arrow Season 3?!

CBM and Tv Line are reposting that the people from Arrow have released four new character descriptions for original characters planning to show up at some point during season 3. Here is the descriptions they have provided with us with.

"The first character they have information on is a man in his 20s, apparently named Daniel however the site believes it may be a throwaway name to prevent spoilers. He is handsome, enigmatic and a highly intelligent enterpreneur who is working on "groundbreaking technology". He will be a major recurring character and a possible love interest for Felicity Smoak. He will be a rival of Oliver both personally and professionally. Dick Grayson anyone?
The second character is a well educated criminal named Seth, good with chemicals and has grand ambitions. He is potentially recurring and gains control over enemies by druging them and draining their willpower. He is a physical match for Oliver. An alternate Scarecrow?
The site also got their hands on some information about characters in the upcoming Hong Kong flashbacks. The two characters they learned about are Toshi and Akiko, a husband and wife duo. Toshi is Oliver's teacher/handler and will become a friend. He is skilled in weaponary, combat and intelligence gathering. Akiko is his wife who will also serve as a caretaker. She is highly skilled in martial arts."

So those are the descriptions. Any ideas of who these characters could be. My thoughts are as follows. The first one could easily be Dick Grayson aka Nightwing or Ted Kord. Now we have been hearing rumors for months now that Nightwing will be appearing on Arrow. Does this add more to these rumors? The next description describes a villain who uses chemicals as his weapon. Could this be an alternate Scarecrow? Seems like a long shot, but considering I am a huge Scarecrow fan, I would not be opposed to seeing him, but again thats a long shot. The last two really got me thinking so I had to think outside the box for these two but I came to this speculation. This could easily be the descriptions of Komodo and Katanna. Komodo would be amazing to see on this show along with Katanna. They are both amazing characters and are incredibly skilled fighters. Just speculations but let us know what you guys think! Stay tuned for more Arrow season 3 news!

Source: CBM
TV Line