In the volatile world of cryptocurrency, few figures are as polarizing or as pivotal as Justin Sun. Known for his dramatic interventions and bold statements, Sun has repeatedly positioned himself as a stabilizer during some of the industry's most turbulent times. From providing critical liquidity during stablecoin crises to supporting major exchanges and DeFi protocols, his actions have often been described as those of a "guardian" or "night watchman" for the crypto space.
This article explores several key instances where Justin Sun stepped in to support the ecosystem, highlighting his blend of strategic vision, operational execution, and occasional theatrical flair.
The TrueUSD Rescue: Averting a Stablecoin Crisis
In early April 2025, reports surfaced that the stablecoin TrueUSD (TUSD) was facing a significant shortfall in its reserves—nearly $456 million. This threatened the token's 1:1 peg to the US dollar and risked broader market instability.
Justin Sun provided essential liquidity to help cover the gap, preventing a potential de-pegging event. In his characteristic style, he compared the situation to a battle between mythical creatures: “Godzilla destroys the city, and I am Ultraman, here to save everyone.”
Beyond the financial support, Sun openly addressed structural concerns. He called for greater regulatory oversight in Hong Kong, urging financial authorities and law enforcement to investigate fraud, strengthen trust mechanisms, and improve licensing supervision. He emphasized that protecting public assets and maintaining Hong Kong’s reputation as a global financial hub were at stake.
defending Ethereum: A Test of Faith
Sun’s relationship with Ethereum has been marked by very public displays of support during periods of extreme pressure.
The May 2021 Flash Crash
On May 19, 2021, cryptocurrency markets experienced a violent crash. Bitcoin fell below $31,000, and Ethereum dropped under $2,000. At the time, Sun held over 600,000 ETH on lending protocols, some of which came dangerously close to being liquidated.
He acted quickly, deploying $300 million to repay loans and avoid liquidation—reportedly with only minutes to spare. He then invested an additional $280 million to buy the dip, acquiring more ETH and Bitcoin. In a reflective social media post, he described the moment as a close call that left him “in a cold sweat.”
The 2024 Ethereum Proposal
During another period of ETH price weakness in 2024, community rumors swirled about Sun’s positions. Rather than retreating, he proposed a comprehensive plan to strengthen Ethereum—suggesting that if he were to lead the Ethereum Foundation, he would:
- Halt sales of ETH from the Foundation
- Use Layer 2 transaction fees for buybacks and burns
- Streamline Foundation operations
- Adjust node incentives to enhance deflationary mechanics
- Increase investment in Layer 1 R&D
Whether realistic or not, the proposal reinforced his image as a long-term believer in the Ethereum ecosystem.
Stewarding HTX: Turning Challenge into Opportunity
In October 2022, amid the collapse of FTX and widespread distrust toward centralized exchanges, Justin Sun took on an advisory role at the exchange then known as Huobi—now HTX.
Many in the industry were skeptical. The platform was struggling with user outflows, regulatory pressure, and internal uncertainty. Critics called it a “hot potato.”
Under Sun’s strategic influence, however, HTX staged a notable recovery. Trading volume and user activity steadily returned. The platform expanded its global presence, ranking third in euro stablecoin trading volume and securing a strong position in the CIS regional market. In 2025, HTX was named one of “Forbes’ 25 Most Trusted Crypto Exchanges.”
The turnaround demonstrated Sun’s ability to not only stabilize but also revitalize a major industry player.
The FTX Collapse: A Bid to Restore Confidence
When FTX imploded in November 2022, the entire market trembled. Billions were locked, and users scrambled to withdraw assets.
Sun was one of the first high-profile figures to offer public support. On November 10, he announced that he would work with FTX on a solution and committed to a 1:1 guarantee for tokens from the TRON ecosystem (TRX, BTT, JST, SUN) and HTX’s token. The following day, FTX enabled withdrawals for those assets.
Sun later told Bloomberg that he was prepared to provide billions in assistance pending due diligence. Although FTX ultimately filed for bankruptcy, his swift action provided relief and options for many token holders.
The Curve Finance Bailout: Stabilizing DeFi
In 2023, the decentralized exchange Curve Finance was exploited, leading to a sharp decline in its CRV token. Founder Michael Egorov faced liquidation on a $100 million loan, which risked cascading across the DeFi landscape.
Sun joined other investors to purchase 72 million CRV tokens at $0.40 each, providing Egorov with $28.8 million in liquidity. The move was praised by analysts, including those at JPMorgan, for helping prevent a broader crisis.
Simultaneously, Sun launched a stUSDT pool on the TRON network, which not only aided Curve but also increased TRON’s Total Value Locked (TVL). Critics argued there was self-interest involved, but many acknowledged that the intervention helped stabilize the market.
Vision and Controversy: The Complex Legacy
Justin Sun’s career is not without controversy. Critics point to his self-promotional style and the clear business benefits that often accompany his very public interventions.
Yet it’s also clear that his actions have repeatedly provided liquidity, confidence, and structural support when markets were under stress. Whether supporting exchanges, defending Ethereum, or bailing out DeFi protocols, he has consistently used his resources to mitigate crisis situations—often with a flair for the dramatic.
As one of the most visible personalities in crypto, Sun continues to shape his legacy as part-businessman, part-guardian, and full-time innovator.
Frequently Asked Questions
Q: What did Justin Sun do during the TrueUSD crisis?
A: Sun provided critical financial support to help cover a $456 million reserve shortfall, preventing the stablecoin from losing its dollar peg. He also called for stronger regulatory oversight.
Q: How did Justin Sun help during the Ethereum crash?
A: During the May 2021 flash crash, Sun used hundreds of millions of his own funds to avoid liquidation of his ETH positions and bought additional tokens to support the market.
Q: What changes did Justin Sun bring to HTX?
A: As an advisor, Sun helped stabilize HTX during a period of user outflows and regulatory challenges. He supported its rebranding and global expansion, leading to increased trading volumes and industry recognition.
Q: Was Justin Sun involved in the FTX collapse?
A: Sun publicly offered support to FTX users by guaranteeing withdrawals of TRON-based and HTX tokens. He also expressed willingness to provide larger financial aid subject to due diligence.
Q: What role did Sun play in the Curve Finance incident?
A: Sun was part of a group of investors that purchased a large amount of CRV tokens to prevent widespread liquidations and stabilize the DeFi platform after a major exploit.
Q: Why is Justin Sun a controversial figure?
A: Sun is known for his bold statements and high-profile investments. While some see him as a market savior, others believe his actions are often motivated by self-interest and personal branding.
Whether viewed as a visionary or a provocateur, Justin Sun remains one of the most active and influential figures in cryptocurrency. His willingness to intervene during crises has repeatedly made him a central character in the industry’s ongoing story—a real-time guardian in the digital asset world who continues to shape its evolution.