Hoffman, Ramos and Mei feng are your masters!
Hoffman is to play in a bubble with all constructs around, it is copying their stats: (Df, Wp, armor, Ml, Sh). His role is more Suport the crew but also can hit.
Ramos is a summoner , takes out many mechanical spider while their large constructs are killing the opponent .
And Mei feng is a rail fighter girl who jump into their construct and hit the enemy, much mobility like an assasin.