• Fastest farming lead in the game
• Unconditional 25x ATK multiplier for fire gods
• 2.25x RCV for fire gods
• Capable of scoring in the top 10% of ranking tournaments with ease

• 2-turn haste active places higher demand on ideal subs
• Subs should almost always be orb changers as you effectively only have 4 actives
• Can be bound (which is becoming more of an issue with pre-emptive leader binds)
• Very REM dependent

Fire rows  are critical for large burst and the 3 Ares  are not a typo as you can run up to 3 with success.

• Controlled and gigantic burst damage potential
• 2.25x RCV for god type monsters
• Capable of clearing the hardest dungeons in the game with the right team and investment
• Can use poison to bypass high defence monsters such as PreDRAs 

• 2-turn haste active places higher demand on ideal subs
• Poison has niche, but seldom common uses
• Subs should almost always be orb changers with   awakenings as you effectively only have 4 actives
• Can be bound (which is becoming more of an issue with pre-emptive leader binds)
• Very REM dependent

Water rows  are critical for large burst and the 3 Hermes  are not a typo as you can run up to 3 with success. If you own a lot of these monsters, you may just be better off running their respective teams or Awoken Lakshimi 

• One of the best bind clearers in the game
• 3,000 auto heal and massive RCV allow for easy stalling
• Unbindable
• 50% base heal is powerful on high HP teams

• No leadership potential
• Overpriced, glorified bind clearer
• Has lower relevance in current meta as many top leads are already bind immune

 ‘s most ideal fit is on a Sylvie  / Freyja  mono wood 2x HP / 10.5x ATK / 2.5x RCV team as a luxury bind clear. Also can make appearances on Spica  and Linthia  teams. Awoken Ceres  can fulfil the bind clearing role and it is a matter of wanting a more luxurious sub.

• 144x ATK multiplier for god types for a relatively “easy” leader skill (compared to other 100x leads)
• 2.25x RCV for god types
• Ample time extend  awakenings
• 2  awakenings to further augment your amazing damage
• Unbindable
• Your friends will envy your damage output

• Only MP dragon to lack a skill lock resist  awakening
• Sub pool is very restrictive for competative play and does to a certain extent rely heavily on 2 Dark Kali 
• Highest chance of any lead to be orb trolled
• Active is a bit lackluster as it is mostly a 2 turn haste

With the free gift of Chocobo  , most players have access to 1 (albeit not guaranteed) Ra Dragon board refresh. It is highly recommended you have at least 2 different board changers to prevent orb troll. Loki  and Kanna  are mostly for those players who wish to clear Arena and lack an Indra  . Orochi  and Sun Quan  provide utility through delays and over the niche water/wood sub and allows for more sub flexibility.

•  Unbindable along with bind recovery  awakening
  • This completely removes the need to bring a bind clear sub as  ‘s active can generate 4 heal orbs and a single row of hearts will remove 6 turns of binds when used as a lead
• Powerful and synergetic active
• 2.25x recovery for god type monsters
• Easy to activate 36x damage with only restriction is having 5 (dark) orbs
• Can create teams with numerous haste actives and thus chaining skills
• 2 time extend  awakenings
• Team building is flexible and only restricts you to using god type dark monsters
• Makes a great sub on nearly every dark team
• Less ugly than Ra Dragon 

• Has lowish damage when only matching 5 dark orbs so actives may be necessary for tougher floors
• Cannot be used in no awakening dungeons

Truth be told, you can bring almost any dark god as a sub for most dungeons as your team building is quite flexible. It is worth noting that the farmable Dark Izanami  can be successfully used and the multiple haste actives can ensure you have very high uptime on her shield.

• Amazing base health, this leads to latent awakening flexibility as teams can now survive hits they couldn’t before
• Unbindable, 2  ,  ,  awakenings
• God Killer  awakening
• Board refresh (that generates hearts) and 1 turn haste
• 45.5x damage for machine types (6.75 * 6.75)
• 136.5x damage versus god type bosses
• 2.25x recovery for machine types to balance out their low base recovery
• Sub and leader potential
• Is a cyborg and killer robot “dragon”

• 0 base recovery
• Machine types are still rare and hard to build a synergetic team
• As a sub, feels inferior to  except when facing gods on rainbow teams (provided you do not need the health boost)
• Does not fully benefit from Ra Dragon  ‘s entire multiplier (or Awoken Ra  )
• Is outclassed by virtually every other green board changer on mono wood teams
• Hardest evolution materials of all the MP Dragons
• Not a pretty girl and barely looks like a dragon (Puzzle and Cyborgs?)

I am kind of fumbling as to what are ideal machine subs as your pool to draw from is still very small and the above are heart breakers (the GFE do remove 1 other colour, but perhaps the skyfalls compensate).

As a sub,  can be used in in place of Dark  or Light  Kali as a modest sub on rainbow teams, but he is not ideal in most cases unless you must hit a specific health threshold to survive particular mechanics. From the feedback I have garnered, it appears that  plays a vital role in Arena 2.0 for highly specialized Ra Dragon  teams.