I Married This Dragon King Instead of My Sister characters

Who's who in I Married This Dragon King Instead of My Sister, a short drama series of 43 episodes on BingeTube: the 5 main characters as the story introduces them.

I Married This Dragon King Instead of My Sister poster

Main characters

Seraphina

Who they are: Human princess and protagonist.

In the story: Seraphina, once a human princess, was previously married to Lord Cassian, the kingdom's greatest dragonslayer, in a forced union that caused deep resentment and tragedy. Cassian's heart belonged to Seraphina's sister, Isolette, who ultimately took her own life after being sent to the dragons, triggering a devastating war.

First seen: episode 1 (free); also in episode 2 (free) and episode 3 (free).

Lord Cassian

Who they are: Kingdom's dragonslayer and Seraphina's former husband.

First seen: episode 1 (free); also in episode 3 (free).

Isolette

Who they are: Seraphina's sister, Cassian's true love.

In the story: Cassian's heart belonged to Seraphina's sister, Isolette, who ultimately took her own life after being sent to the dragons, triggering a devastating war.

First seen: episode 1 (free).

Varus

Who they are: The Dragon King, fearsome ruler of the dragons.

In the story: Instead, she boldly declares her intention to marry the fearsome Dragon King, Varus, a move that shocks the royal court and challenges long-held alliances.

First seen: episode 3 (free).

Seraphina's Father

Who they are: King opposing Seraphina's decision.

In the story: Cassian's heart belonged to Seraphina's sister, Isolette, who ultimately took her own life after being sent to the dragons, triggering a devastating war. Despite opposition from her father and others who fear the consequences, she insists on changing the marriage decree to bind herself to the Dragon King rather than Cassian.

First seen: episode 2 (free).

Where to start

Watch episode 1 of I Married This Dragon King Instead of My Sister (episodes 1–5 free).

I Married This Dragon King Instead of My Sister: the story, episode guide and questions

I Married This Dragon King Instead of My Sister characters: questions

Who are the main characters in I Married This Dragon King Instead of My Sister?

Seraphina (human princess and protagonist); Lord Cassian (kingdom's dragonslayer and Seraphina's former husband); Isolette (Seraphina's sister, Cassian's true love); Varus (the Dragon King, fearsome ruler of the dragons); Seraphina's Father (king opposing Seraphina's decision).

Who is Seraphina in I Married This Dragon King Instead of My Sister?

Human princess and protagonist. Seraphina, once a human princess, was previously married to Lord Cassian, the kingdom's greatest dragonslayer, in a forced union that caused deep resentment and tragedy.

Who is Lord Cassian in I Married This Dragon King Instead of My Sister?

Kingdom's dragonslayer and Seraphina's former husband. Seraphina, once a human princess, was previously married to Lord Cassian, the kingdom's greatest dragonslayer, in a forced union that caused deep resentment and tragedy.

Who is Isolette in I Married This Dragon King Instead of My Sister?

Seraphina's sister, Cassian's true love. Cassian's heart belonged to Seraphina's sister, Isolette, who ultimately took her own life after being sent to the dragons, triggering a devastating war.

Who is Varus in I Married This Dragon King Instead of My Sister?

The Dragon King, fearsome ruler of the dragons. Instead, she boldly declares her intention to marry the fearsome Dragon King, Varus, a move that shocks the royal court and challenges long-held alliances.

Who is Seraphina's Father in I Married This Dragon King Instead of My Sister?

King opposing Seraphina's decision. Cassian's heart belonged to Seraphina's sister, Isolette, who ultimately took her own life after being sent to the dragons, triggering a devastating war.