Manifestations can vary depending on the spirit
or entity but you can typically expect to see orbs, light streaks, Shades,
mist, blurry apparitions, audible sounds, words, or noises, and to have
manifestations of true form in dreams or visions.
Some races of entities share common manifestations, however, it is up to each individual spirit to decide how they are going to manifest to their Keeper. Most spirits choose a method of manifestation that is most comfortable & most recognizable to their Keeper so it results in a greater bond & greater chance of interaction.
Manifestations can be abrupt or slow to form. They can be long-term or temporary. Each spirit & relationship has to be taken on its own merit.