Tsennu
Tsennu are a sub-species of Julth. They are capable of joining with sapient hosts, gifting them with special abilities. In some cases, the Tsennu will control the host's mind.
Appearance
Like all Julth, Tsennu resemble glowing beams of energy. When they have a host, the host will cast a glowing aura around itself.
Life Cycle
Tsennu enter universes through Dimensional Rifts through the Crossverse. Once they find a sapient being, they will enter its body. The host will be given many powers, including force fields, laser beams, and sometimes FTL abilities. With FTL, hosts can travel from planet to planet near instantaneously.
History
It seems that these creatures were engineered by Julth scientists during the Julth War. They were created to infiltrate Veiled One ranks, although this seems to have failed completely.