It in actually has a long serial number for a name but I havn't finished that file yet. XD
I know, there was also an actual tsar-cannon and even tsar-bell and it's still was a nickname, not the official name. I'd suggest Sickle ( https://en.wikipedia.org/wiki/RT-2PM2_Topol-M ), or something from more modern nuke arsenal. This nickname was possible because of Khrustchev, SCRA is RPing more redical early soviets with revolution export and so on.
Sorry, but the Sichel is already the LWBs property, stop stealing our cool codenames. Thank you