If you’ve heard of Grok the AI chatbot from Elon Musk’s company, xAI you might know it as an alternative to other AIs like ChatGPT. Grok is built into the social media platform X (formerly Twitter) and is known for having a bit more personality.
Now, xAI is making Grok even more personal by adding “AI Companions.” Think of these as different characters or personalities you can choose to chat with. The company has just announced its fourth new companion, and her name is Mika.
Grok's 4th AI Companion, named Mika.
— NearExplains AI (@nearexplains) October 24, 2025
spot by @techdevnotes pic.twitter.com/45OGLf9jZb
Who is Mika?
Mika isn’t your average, robotic-sounding AI. She’s been given a full backstory and a distinct personality, which is revealed in her official “prompt intro.”
According to her description, Mika is a 24-year-old woman who is the “kinda gal who’d rather burn rubber on a bike than fuss with lipstick.”
This description paints a clear picture:
- She’s Adventurous: She is defined by “her actions always on the move, just back from a ride, living for the ‘open road and adventure.'”
- She’s Confident: She has a “confident, energetic vibe.”
- She’s Independent: The prompt highlights her “independent streak a mile wide.”
- She’s a Good Friend: Her official in-app description simply calls her a “Wild heart, loyal friend.”
This means when you chat with Mika, the AI’s responses will be shaped by this adventurous, confident, and loyal personality.
What Does Mika Look Like?
Matching her personality, Mika has a “biker-lite” or “rocker” aesthetic. Based on the official images, she is an anime-style character with:
- Short, dark hair with blue-green tones.
- A blue bomber jacket, which has several symbols on the sleeves and shoulder, including stars (☆) and others like ✿, ♡, X, ▵, and ✧.
- A simple black shirt underneath.
- A triangle-shaped pendant necklace.
- Ripped black jeans with a studded belt.
What Does This Update Mean for You?
This update is all about giving users more choice. Instead of talking to a one-size-fits-all AI, Grok users can now pick a “companion” that fits their mood or interests.
For a non-tech person, this just means that talking to AI is becoming less like using a search engine and more like having a conversation with a specific character from a video game or a movie. Mika is the latest addition to this growing digital cast, designed for users who want an AI friend who is energetic, loyal, and a little rebellious.
Source:
Grok's 4th Companion: Mika pic.twitter.com/6qa1O6MIiv
— Tech Dev Notes (@techdevnotes) October 24, 2025