Ok First of all they made this boss in a such bad way. Man he lacks coherency.
Like Blackhearth he will summon help which are based on his weaknes.
Thanos can be any class and if hes a Scrapper he will summon the first boss of the special operation as shes a Blaster. Which is then good agianst Brusiers.
If hes Tactician he summons the second boss as hes a Scrapper.
However, as Playdom is lazy as ever. They dident bother doing more then 2 bosses even if they have more of Thanos Liutenent in the game,,,,,,
So if you face Thanos as a Inflitrator for example you can just go with Scrappers.
Well the help he gets is usually not so dangerous anyway so.
Blackhearth was much harder as he also had a passive counter to his weakness class.
Anyway what I really wanted to point out with this article is the order of figthing Thanos as a Group Boss.
No matter of class he is the order of turns will always be the same!!!
Its always top - bottom - middle.
And he last, what this means is that you can set up your team very easily.
I for example start with Psylocke to use Mind coordination, as then the next person will have chance to trigger coordination. Then I go with Union Jack to set Flanked on him. Leaving the agent with both extra stats a double attack and a chance to trigger the others to join in(Union Jack will almost always trigger his Allied force).
Of course he almost always do Black hole first will remove all debuffs/buffs so it can be worth saving some moves.
Another team I use is Ares Elektra, then I let Elektra go first as she got flanked Ares can be last as his coordination is passive.
This team is really good agianst Thanos, he cannot remove internal bleeding, both Ares and Elektra can use the hemorrhaging effect on their attacks to always dmg him. + You can just not attack him when he is to escape and he will still take damage by the bleeding. He will attack when he is waiting to escape but this can still be used to deal a couple of thousend more damage.
