Single Bot
From WikiManual
A singlebot, sometimes abbreviated as SB, is any bot made of a single cell unconnected to other cells by permanent ties.
Singlebot Advantages
Singlebots are much simpler to program than multibots. They are also significantly more maneuverable. An SB that uses ties does so primarily to feed from other bots. While feeding SBs can become Multibots but revert to SB status once feeding is complete.