The first and main attack is a crushing based attacked, dealing a devastating 120-180 damage. With armor piercing abilities and a high critical chance against soldier units. The second attack is an explosive type laser strike that deals 80-120 damage horizontally to three squares, with a range of 1-5. The 90% armor Piercing and 35% critical hit against tank (Edit: now it seems to be 10%, another nerf) units allows the Dexter Fragment to easily shred apart tanks. Compared to the limited time promotional unit Imitation Fragment, the Dexter Fragment remains superior in most aspects. Although the Imitation Fragment deals higher maximum damage, the accuracy of both attacks are reduced. Furthermore, it has less and as well as costing a whopping 100 .
Note that the Sinister and Dexter Fragments are almost identical in stats and stat growth.