B2-CC9 is a B2-series super battle droid.  It is tall, intimidating and has masculine programming and a deep metallic voice.  The carbon scoring of many battles has been mostly painted over and scrubbed off and this droid is in excellent condition.  Those observing it for long periods of time may note that it is somewhat bossy around its predecessor droids, B1-AE3 and B1-AE5.

(( As a vocal reference, its voice resembles the deeper version from this clip: http://www.youtube.com/watch?v=YPL7QPCfVZc ))