Babushka says not one step backward. Every seventh shot, she gives a damage bonus! Also, the thing starts active, making her one of very few buffers with a start-of-battle skill activation. Her first skill is still defensive in nature, and the percentages got bigger. She's actually useful in a number of situations, either for reducing enemy firepower in specific fights (usually Gundam or tank related) or just the straight DPS boost from the get-go. You only really need her up to Mod 2, but the Mod 3 art is cute.

Her pre mod form is here

Forget what Clint Eastwood said, THIS is the most powerful handgun in the world. Somehow packing a .357 Magnum cartridge that deals more damage than .50BMG or whatever the hell Contender is in. Python is a ridiculous handgun that with the right formations, does absolutely disgusting things to the game. She needs her skill at lvl10 to be reliable, but oh boy when it does.

Besides being a handgun with actual DPS (that can get really high), she also acts a buff booster, applying stacking buffs of her own whenever she receives a buff from almost any source, giving them to herself and anyone in her buff tiles. When she gets a RoF buff, she gives a RoF buff. When she gets an Acc buff, she gives an Acc buff. When she gives an FP buff, she too gives FP buffs. And that's just the passive. Her active gives her a stacking self FP buff and counts among "almost any other source", so yeah, triggering it ALSO gives FP buffs to everyone else.

This, on top of amazing buff tiles basically gives her ridiculous performance for a handgun. Just don't think she's some allmighty goddess of doom that wins on her own. What she is is an insane force multiplier when used right, and you need some force to multiply to begin with. Used wisely though, easily 1 of the best HGs in the game.

Generally decent buffs esp. at night, and she can be an evasion glass tank (100 evade!) in a pinch. Not bad if you actually kite your pistols but be wary of her limited HP. Honestly, you want a real tank in front still. With her mod, her usefulness continues due to the fairly good buffs she provides.

Her unique expedition equip is decent (even more evasion), but the real draw for it is when you can use it with her other unique equips for the set bonus.