There is only one wild Seikamater, and she is found in the Deepest Anthell. The player has to fight her in order to save Tiko, and she cannot be captured in the wild during the story. However, the player is able to create another Seikamater by achieving level 45 or higher with a female Smore, Sponee, or Tricwe while holding the Royal Jelly, making it the only Legendary obtainable by evolution at the time of its creation.
The Queen of all bugs in Tandor. She lurks deep within the Anthell, sleeping for a year in between broods.
Seikamater is a gigantic insect Pokémon that resembles a combination of a moth, dragonfly, ant, and bee. Her head has six eyes and red antennae with yellow fluff. Her body is a dark brown color, with hair on each section that is red, yellow, and blue. She has three sets of dragonfly-like wings on her back, and six legs. She has a massive abdomen where she stores the eggs she will lay that will hatch into the next generation of Smore, Sponee, and Tricwe. Seikamater is a female-only Pokémon, and although she has no true male counterpart, she is closely related to Firoke, Sponaree and Harylect, being a branched evolution of all three.
Seikamater is the incredibly powerful queen of the Anthell. She shares a hivemind with all of the other bug Pokémon in Tandor. Her attacks are devastatingly powerful. Seikamater only awakens once every few years to mate and lay thousands of eggs all at once. When she does awaken, the Anthell becomes a dangerous place as the workers go into overdrive collecting food to prepare her for the brood. She commands the hivemind and is able to control all bugs with her will. Seikamater dwells in the Deepest Anthell and never leaves. Her workers bring food to her.
Bold indicates a move that gets STAB when used by Seikamater
Italic indicates a move that gets STAB only when used by an evolution of Seikamater
Seikamater is in the Undiscovered egg group and cannot breed offspring as a result. It must instead acquire the following moves by breeding moves compatible with either Smore, Sponee, or Tricwe. Each of which will be listed first, followed by the Pokemon capable of breeding the move if applicable.
As of version 1.2.2, if Seikamater is encountered outside of its normal location during Randomizer Mode, it is able to be caught as with any other Pokémon (catch rate 15). The same is true for S51-A (catch rate 45).