Don't let kerfur touch water, it breaks their movement until they are turned off and back on again.
Viewing post in Voices of the Void 0.8.1 Bug Reports
He is already spinning around a lot when i first get him. I bought him and sent him out to fix servers. he never touched water and i had to slow my frames down to like 25 to even be able to slightly control him since he kept getting stuck on the edge of one of the satellite dish bases. then when i finally managed to get him onto the concrete platform he keeps going up the stairs and getting caught on the railing until he falls under it and has to climb up again.