Official Website also updated with S2 character profiles. Link: http://g-tekketsu.com/2nd/character/
Below are some rough info.
-Tekkadan has an earth branch, known members include Chad, Takaki, Aston (ex-brewers) and a new auditor guy (seems to clash with other Tekkadan members often).
-Eugene is the Tekkadan's deputy leader. Sometimes command battle in place of Orga. Busy studying up on battle tactics.
-Norba is the leader of the first group (or whatever they call it) and the trainer for new recruits. Other known members of the first group are Dante and Delma (ex-brewers)
-Akihiro is the leader of the second group, excel at defensive battles/missions. Currently Ride is the other known member of the second group.
-Yukinojo's maintenance knowledge has increased thanks to assistance from Teiwaz.
-Nothing new for Yamagi, Atra in charge of food and Merribit is the manager of Tekkadan's Mars HQ.
-Three new named recruits. The large size one is a mechanic.
-Kudelia she set up the company, which seems to be involved in Half Metal processing and distribution. The other lady is the company's secretary.
-McGillis takes up Carta's position. Seems to be working on reducing the mistrust between Gjallarhorn and the economic blocs. Attends the Seven Stars meeting as the head of the Fareed Family. Influence within Gjallarhorn increasing.
-The young guy in blue uniform is McGillis' subordinate. Through his own network knowns about matters in the Outer Sphere well, and also an excellent pilot.
-Extra: McGillis is piloting a revised Graze Ritter(no change in appearance but better mobility under gravity), his Schwalbe Graze is handed down to his subordinate.
-Old guy is the head of the Arianrhod fleet, and the head of a Seven Stars family. Well liked by his subordinates. Has a firm power(?) base in Gjallarhorn, keeping an eye on McGillis as well as keeping him in check
-Young, dark haired guy in green Arianrhod fleet uniform is the leader of fleet's first corp and participates in battle sometimes. Head of a Seven Stars family.
-Young, blond female (? i think…) is an excellent MS pilot and a member of the Arianrhod fleet. Has her own customise MS.
Edit:For some crazy reason, i wrongly see 'Admoss' as 'Montag'. Have corrected the mistake