To update, it seems robocode version 126.96.36.199 through 188.8.131.52 had entirely broken getTeammates/isTeammate, which breaks various TeamRumble/LiteRumble bots, including but surely not limited to LunarTwins.
This bug appears to have been introduced to 184.108.40.206 as a side effect of the fix to this bug.
Version 220.127.116.11 fixes a bug with getTeammates/isTeammate.
So Skilgannon if you're reading this, we should probably update the literumble version to 18.104.22.168, and also clear all TeamRumble/TwinDuel pairing data that was from a client with one of the flawed versions. Given things appear to have went from 22.214.171.124 to 126.96.36.199 in LiteRumble, it looks like it's just the 188.8.131.52 results that need to be cleared from TeamRumble/TwinDuel pairing data. :)
Rumble is updated to only accept 184.108.40.206. I will wipe the Team / TwinDuel, unfortunately they aren't stored by upload version.