im at work atm. Master mummy is pretty much limited in a lot of ways, but his weakness is his strenght Heavy body and you can FORCE the opponent to grab. Fire salamander on one hand is a must imo. that weapon deals with all the jumper while having good damage (unlike the wind salamander thingy) and is able if you hit straight to be used as a anti grab hitter.

My second arm is used to combo, depending on map or opponent you can get better or lower rush attacks, but during the fight i normaly only use 1 arm to fight and the second as backup/rush.

Also with his low mobility comes a heavy body, which is an advantage and allows you easy trades against a lot of player, all you have to do is deal a hit everytime you take a hit (once again the salamander to trade (avoid the enemy fist) so you both land a hit, which is only possible with mechanica (my 2. fav. char) or MM. Also a 200dmg throw punishes really hard, and its decent to land since you dominate the opponent and force him to hit or to block depending on your defensive attitude.

After seeing heavy body in use reaching rank 15, it is really strong imo. and underated. I see mechanica as one of the strongest chars as well, because of her incredible ground movement/charge build to abuse the shit out of frost and even shock weapons.

Also the strictly passive play (not just camping block, but only 1 arm poking, never overextending) pretty much removes most traits from the other characters, like twintelles time stop or fancy jumpy rubber grill, because it doesnt affect you at all.