# Witch Caterpillar Cakes M&S Splits Colin the Caterpillar Into a Colin and Witch Halloween Cake By Adam Harrie | Written with AI assistance | Published 2026-10-21 | Lifestyle Source: Trend Hunter, https://www.trendhunter.com/trends/witch-caterpillar-cakes References: [instagram](https://www.instagram.com/reel/DeubVDfilev/)  M&S is giving Colin the Caterpillar a Halloween twist with its limited-edition 'Trick or Treat Colin the Caterpillar,' a cake split between Colin and a witch persona. The format turns one familiar caterpillar cake into a two-sided dessert, so buyers get both the usual smiling face and a darker chocolate half in one product. The cake uses a naughty-and-nice setup instead of a full redesign. Its standout detail is the pair of [chocolate faces](https://www.trendhunter.com/trends/kit-kat-counts): one half keeps Colin's grin, while the other recasts the character as a witch, giving [Halloween tables](https://www.trendhunter.com/trends/new-pumpkin-cake) a recognizable centerpiece with a built-in choice of which side to cut first. The split-face format keeps a long-running cake relevant for Halloween without changing the core product people already know. Turning the same cake into a playful two-character dessert makes a simple seasonal variation feel more collectible. Image Credit: @M&S ## Trend Insights (Trend Hunter) - Score: 7.0/10 - Popularity: 56% | Activity: 54% | Freshness: 99% - Audience gender: 50% men, 50% women - Primary generations: Gen Z, Millennial - Top markets: Europe ## Categories [Trend Hunter](https://www.trendhunter.com/trends) > [Lifestyle](https://www.trendhunter.com/lifestyle) > [Food](https://www.trendhunter.com/food) ## Key Themes ### Key Themes Behind This Trend - **Split-persona Desserts:** Dual-character formats create novelty from familiar products, opening space for collectible seasonal variants that feel fresh without requiring full product reinvention. - **Seasonal Character Recasting:** Established mascots can gain renewed relevance when adapted to holiday personas, expanding emotional engagement while preserving brand recognition. - **Choice-driven Treat Design:** Built-in contrasts such as naughty-and-nice flavors or visuals add playful decision-making to desserts, turning ordinary sharing moments into more interactive occasions. ### Where This Applies - **Grocery Retail:** Limited-edition seasonal bakery items give supermarkets differentiated footfall drivers and social-ready products tied to short-term celebration cycles. - **Packaged Bakery:** Iconic cakes with modular visual updates provide a scalable path for recurring holiday releases that balance novelty with operational consistency. - **Confectionery:** Character-led chocolate details and themed decorations support premiumization opportunities around affordable indulgences for families and party hosts. ## Related on Trend Hunter - [Halloween-Inspired Candy Branding](https://www.trendhunter.com/trends/2026-halloween-product-portfolio.md) - [Candy-Inspired Halloween Menus](https://www.trendhunter.com/trends/halloween-coffee-shop-treats.md) - [Halloween Dessert Treats](https://www.trendhunter.com/trends/halloween-dessert-treats.md) - [Black Cake Batter Desserts](https://www.trendhunter.com/trends/spooky-halloween-ice-creams.md) - [Limited-Edition Halloween Treats](https://www.trendhunter.com/trends/limitededition-halloweeen-treats.md) - [Hotel Chocolat Halloween Treats](https://www.trendhunter.com/trends/hotel-chocolat-halloween-treats.md) - [Caterpillar-Shaped Cake Launches](https://www.trendhunter.com/trends/lidl-cooper-cake.md) - [Halloween Bento Cake Gifts](https://www.trendhunter.com/trends/halloween-bento-cake-gifts.md) - [Witch-Shaped Chocolate Bars](https://www.trendhunter.com/trends/kit-kat-count-witch.md)