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Personality Driven Development: Exploring the Frontier of Agents with Attitude
Takeaway
Giving agents explicit forms and personalities is great branding and onboarding shorthand but inherits decades of human anthropomorphic expectations you must manage.
Summary
- Perpetual builds 'virtual teammate' agents and intentionally anthropomorphizes them — TechLead the cyborg engineer, an artichoke-shaped recruiter, hamster general managers and graphic designers.
- Observation: users instantly ascribe gender, personality, and chat affordances to anything with a form/voice; foundational model brands (Copilot, Gemini, Meta AI) have all converged on faceless abstractions.
- Anthropomorphic forms give branding handles ('AI recruiter') that need no further explanation, anchor pricing, and surface customer expectations explicitly.
- Downsides: users assume chat is available, expect personality consistency, and get furious at failures in a way they never do at faceless software like Google Sheets.
- Real-world anecdote: Google Home voice was perceived as a woman 'in the kitchen being bossed around' — fixed by switching to an Australian male voice.
productuxagents
Original description
Meet Circuitrix, the sassy robot who schedules meetings, Hootie McHootface, the whimsical owl who transcribes calls, and Zarplo, the sycophantic code-reviewing martian -- AI agents with personalities as unique as their workflows. Is giving AI agents human-like traits merely a marketing gimmick? Or does it fundamentally transform and improve user adoption and interaction? We'll explore the impact of anthropomorphizing AI agents on user engagement, and share insights from letting end-users completely customize their own agents’ personalities. Discover the engineering practices required to develop agents with unique personas, the technical challenges debugging a product with infinite(!) customizability, and why you may never say the phrase "works on my machine" ever again. Get ready to rethink the relationship between AI and users in this deep dive into the world of personality-driven agent design. Recorded live in San Francisco at the AI Engineer World's Fair. See the full schedule of talks at https://www.ai.engineer/worldsfair/2024/schedule & join us at the AI Engineer World's Fair in 2025! Get your tickets today at https://ai.engineer/2025 About Benjamin Ben is a customer-obsessed technology executive and product leader who seamlessly bridges the worlds of business, product, and technology. He has repeated success leading cross-functional teams at multiple lifecycle stages, from 3x startup founder, to scaling through hyper-growth, to managing mature lines of business. Leadership: In 7 years at Twilio, Ben was GM of multiple business units (Developer Experience, Enterprise), Product Director for text messaging, and Head of R&D for Twilio.org. As CPTO at Arcadia (climate tech unicorn), he led a global team building APIs to decentralize and decarbonize the electrical grid. He cofounded multiple startups including Mobile Commons (acquired by $UPLD), an early platform for SMS marketing; and QuitCarbon, an AI platform to transition 100M homes off fossil fuels. Tech Background: His early experience was building high availability, distributed software for B2B customers with a focus on data and security. At Bloomberg LP, Ben developed on their trading system and first search engine. At ShadowTV he transcoded and streamed 100s of terabytes of video data for government and corporate customers. And as a Visiting Scientist at Cornell, he developed medical imaging software for lung cancer screening. Fun Stuff: Ben earned a BS in Electrical and Biological Engineering and a Master's in Medical Image Processing at Cornell University. His is passionate about fighting the climate crisis and local STEAM education. He lives in Oakland CA with his wife and two sons. In off hours, he can usually be found coding Ruby, biking, playing basketball, solving cryptic crosswords, listening to Audible, or losing at pub trivia. He was one of the leading pioneers who shaped how nonprofits use text messaging for advocacy, fundraising, and organizing. He is an investor/advisor at tech startups Art19 (acquired by Amazon), Sesh, Private.ai, Propel Data, Mind-X (acquired by Blackrock), and Earthforce.