Telne

Telne (Telne テルネ) is the second-in-command of the Harmony Faction and Elma's grandmother.

Appearance
In her human form, she is a short dragon who resembles Elma, wearing a long-sleeved shirt with the arms tucked upwards, and a long skirt. Her clothes are based on latest trend and preference of how she likes cute things. Her horn sticks upward over her right eye. Her hair is tied in two pig tails.

In her true/dragon form, she is a water dragon with fur with two horns one being damaged, possibly from a battle.

Personality
She acts younger then she appears that she called herself Elma's older sister, though Kimun and Elma calls her a granny. She also loves cute things and enjoys being treated as a child.

As a member of the Harmony Faction, she appears to hold their creed that dragons should not disrupt the order of the world. However, she is shown to be rather lax towards this ideal and is willing to forgive if it's cute. She also prefers to avoid conflict under pretense of being a member of the Harmony Faction.

Plot
Telne first appears alongside Chaos Faction stalwarts Kimun Kamui and Damocles at Kobayashi's apartment. Telne stays silent while the Chaos dragons discuss matters related to Kobayashi's new role at work, and only starts speaking after she exchanges contact details with Kobayashi. She then goes along with Kimun and Damocles, as well as Kobayashi and her dragon dependants, to a maid café, and watches Kobayashi get wasted. Just before the three dragons part ways with Kobayashi and her dependants, Telne hears from Tohru that the latter was stabbed with the holy sword. Telne wonders where it went.

Telne later goes to visit Elma herself, and just so happens to encounter her with Kobayashi during their lunch break. Though Telne does not like what she hears about Elma's adventures in Kobayashi's world, she forgives her granddaughter because of the latter's honesty. Telne then observes Elma at work while perception-blocked, but Kobayashi somehow manages to talk to Telne as if she was there all along, without being stared at by colleagues.

In chapter 105, Telne returns to Kobayashi's apartment. She details to Kobayashi the proposals of an arranged marriage between Elma and a member of the Dragon Slayer subgroup of the Harmony Faction, and the rationale for ensuring the marriage goes through. The representative witness that she brings along, Clemene, is attacked by Ilulu and Kanna Kamui during her discussions, so when Kobayashi voices opposition, Telne comes seemingly out of nowhere to attack Tohru, right in front of Elma. As a result, both Tohru and Kobayashi back down over Telne's proposal. At this point, Telne also suspects that the holy sword Tohru was stabbed with, is now with Kobayashi. After Telne agrees to honor the two-week notice period for Elma to leave her role at work, word of the plans of Elma's prospective partner goes back to Kobayashi, and she raises this issue with Telne. Telne has Elma's future husband show up and explain the situation.

After Elma burns her bridges with Tohru, she terminates her role at Kobayashi's company and shows up in front of Telne, ready to return home. Elma and Telne appear at the wedding ceremony where they are greeted by the former's future husband Jida, as well as other Harmony dragons in their human forms. Before the arranged couple can make their vows, the wedding is suddenly gatecrashed by Tohru, who "saves" Elma while knocking down most of the Dragon Slayer clan at the same time. Witnessing this, Telne realizes her mistake. Quetzalcoatl shows up to give Telne some food; Telne accepts some of it before leaving and reporting back to Kobayashi. After witnessing Jida himself suffer defeat at the hands of Tohru, Telne shows up in front of Tohru to challenge her again. Even with Elma supporting Tohru, Telne proves to be too strong, so Tohru calls for Kobayashi's help. Kobayashi manifests the holy sword and lets Tohru wield it. The holy sword does not burn Tohru's hands as Telne expected it to, therefore, Telne morphs into her dragon form and prepares to blast the sword. She ultimately fails, and lets Elma return to Kobayashi's world.

Powers and Abilities
As the number two member of the Harmony Faction, it suggests that she holds a higher form of authority over them.

It is also hinted she is extremely powerful such as clearing the skies in the shape of a cross with only her fingers. She was also able to easily defeat Tohru in a duel.

According to Elma she is able to touch anything in her sight regardless of perseption.

Elma
Unlike Tohru's and Kanna's parent figures, Telne is shown to be both caring and considerate towards Elma and her needs. She finds Elma cute and wants to pamper her, but tries to be stern with her such as lamenting and lecturing Elma's actions for bringing various kinds of disorder to the human world despite being a member of the Harmony Faction and even threaten to take Elma back. However, it is shown she wasn't that serious on the matter and just wanted to check out her granddaughter and understood why Elma likes the human world.

She prefers Elma to call her sister instead of grandma.