Spencer Grammer (born October 9, 1983) is an American actress whose work spans television comedy, drama, and animation. She is widely recognized for voicing Summer Smith in the animated series Rick and Morty and for playing Casey Cartwright in the college-set comedy-drama Greek. As the daughter of actor Kelsey Grammer, she comes from a family strongly associated with film and television, but her career has been shaped by roles that established her on her own terms.

Career

Grammer first became familiar to many viewers through Greek, where she portrayed Casey Cartwright, a capable and ambitious student involved in campus Greek life. The series mixed humor with coming-of-age storylines, and her performance helped make the character one of its central figures. Later, her voice role in Rick and Morty brought her a different kind of visibility. As Summer Smith, she plays the teenage sister of Morty and a recurring partner in the show’s fast-moving science-fiction adventures.

Her work in animation is notable because it relies on timing, tone, and character chemistry rather than physical performance. In Rick and Morty, Summer is often written as outspoken, impatient, and resourceful, giving Grammer a role that balances comedy with emotional realism. This contrast between live-action and voice acting has helped define her range as a performer.

Notable roles

  • Casey Cartwright in Greek — a key live-action role in a college comedy-drama.
  • Summer Smith in Rick and Morty — her best-known voice acting role.
  • Additional appearances in television and film that reflect a steady career across genres.

Grammer’s career is often discussed in relation to her family background, but her best-known performances stand on their own. She has worked in projects that reached very different audiences: network television, cable comedy-drama, and adult animation. That variety has made her a recognizable presence in contemporary American television.

Overall, Spencer Grammer is best understood as a versatile actress whose most prominent roles have become part of popular television culture. Her performances in Greek and Rick and Morty have given her lasting recognition, while her broader body of work shows an actor comfortable moving between genres and formats.